Illustrative Math Alignment: Grade 8 Unit 1
Rigid Transformations and Congruence
Lesson 15: Adding the Angles in a Triangle
Use the following Media4Math resources with this Illustrative Math lesson.
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Math Examples Collection: Equations with Angle Measures | OverviewThis collection of examples focuses on Solving Equations Using Angle Measures and Properties, offering a comprehensive set of problems that progressively increase in complexity. The examples cover a range of skills, including applying angle relationships, using geometric properties, and solving multi-step equations. |
Solving Multistep Equations, Applications of Angles and Planes, Applications of Quadrilaterals, Applications of Equations and Inequalities and Definition of an Angle |
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Math Examples Collection: Analyzing Congruent Shapes |
OverviewThis collection aggregates all the math examples around the topic of Analyzing Congruent Shapes. There are a total of 9 Math Examples. This collection of resources is made up of downloadable PNG images that you can easily incorporate into your lesson plans.
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Definition of a Triangle |
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Interactive Media Collection: Parallel Lines |
OverviewThis collection aggregates all the math videos and other resources on the topic of Parallel Lines. There are 13 resources.
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Point-Slope Form, Slope-Intercept Form, Parallel Lines, Slope, Definition of a Quadrilateral and Perpendicular Lines |
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Animated Math Clip Art Collection: Parallel Lines | OverviewThe collection of animated math clip art on the topic of "Parallel Lines Cut by a Transversal" from Media4Math includes a variety of resources designed to enhance the teaching and understanding of this geometric concept. This collection features a total of 8 animated images that visually demonstrate the relationships between angles formed when parallel lines are intersected by a transversal. |
Parallel Lines |
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Google Earth Voyager Collection | OverviewThe Google Earth Voyager Story Collection offers an engaging set of lessons focused on geometric models, leveraging the immersive capabilities of Google Earth. This collection enables students to explore a variety of geometric concepts through real-world applications, enhancing their understanding of geometry, architecture, and culture. Each lesson is designed to develop geometric skills such as understanding shapes, symmetry, scale, and spatial reasoning. |
Perpendicular Lines, Parallel Lines, Applications of Points and Lines, Applications of Circles, Cylinders, Applications of Angles and Planes, Applications of Polygons, Pyramids, Triangular Prisms, Rectangular Prisms, 3-Dimensional Figures, Applications of Surface Area and Volume, Rational Functions and Equations, Surface Area, Volume, Applications of Triangles and Applications of Quadrilaterals |
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Math Examples Collection: Equations Using the Exterior Angle Theorem | OverviewThis collection aggregates all the math examples around the topic of Equations Using the Exterior Angle Theorem. There are a total of 10 Math Examples. This collection of resources is made up of downloadable PNG images that you can easily incorporate into your lesson plans.To learn more about Media4Math's Math Examples, click on this video link.
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Applications of Triangles |
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Math Definitions Collection: Geometry Theorems and Postulates |
OverviewThis collection aggregates all the definition image cards around the topic of Theorems and Postulates terms and vocabulary. There are a total of 18 terms. This collection of resources is made up of downloadable PNG files that you can easily incorporate into a presentation.
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Definition of a Triangle, Definition of an Angle, Right Triangles and Definition of a Line |
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Test Prep Interactive Quizzes | Addition Facts to 10, Addition Facts to 25, Addition Facts to 100, Place Value, Subtraction Facts to 100, Definition of an Angle, Solving One-Step Equations, Graphs of Linear Functions, Slope, Slope-Intercept Form and Counting | |
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Math Examples Collection: Equations with Angles from Parallel Lines Cut by a Transversal |
OverviewThis collection aggregates all the math examples around the topic of Equations with Angles from Parallel Lines Cut by a Transversal. There are a total of 10 images. This collection of resources is made up of downloadable PNG files that you can easily incorporate into a presentation.
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Parallel Lines, Applications of Angles and Planes and Applications of Equations and Inequalities |
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Math Clip Art Collection: Triangles |
OverviewThis collection aggregates all the math clip art around the topic of Triangles. There are a total of 14 images. This collection of resources is made up of downloadable PNG files that you can easily incorporate into a presentation.To download the full set of these resources, click on this link.
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Applications of Coordinate Geometry, Applications of Triangles, Definition of a Triangle and Right Triangles |
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Math Clip Art Collection: Points, Lines, Segments, and Rays |
OverviewThis collection aggregates all the math clip art around the topic of Points, Lines, Segments, and Rays. There are a total of 18 images. This collection of resources is made up of downloadable PNG files that you can easily incorporate into a presentation.To download the full set of these resources, click on this link.
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Applications of Points and Lines, Parallel Lines, Perpendicular Lines, Applications of Coordinate Geometry and Coordinate Systems |
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Math Clip Art Collection: Parallel Lines Cut by a Transversal | OverviewThis collection of math clip art focuses on the geometric concept of parallel lines cut by a transversal. The sequence of images provides a visual representation of this important topic, making it an excellent resource for introducing and teaching the subject to students. The clip art illustrates key concepts such as corresponding angles, alternate interior angles, alternate exterior angles, and same-side interior angles. |
Parallel Lines |
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Math Clip Art Collection: Angles |
OverviewThis collection aggregates all the math clip art around the topic of Angles. There are a total of 22 images. This collection of resources is made up of downloadable PNG files that you can easily incorporate into a presentation.To download the full set of these resources, click on this link.
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Angles and Applications of Angles and Planes |
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Animated Math Clip Art--3D Geometry--Rotating a Triangle to Form a Cone | Rotating a Triangle to Form a ConeTopic3D Geometry DescriptionThis animation shows how rotating a triangle around one of its sides creates a cone. It's a powerful visualization of how 2D shapes can generate 3D objects through rotation. Animated math clip art like this is crucial for teaching as it helps students visualize the formation of cones. Teachers can use this to introduce concepts of volume and surface area of cones, as well as topics in calculus related to solids of revolution. |
Cones |
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Animated Math Clip Art--Parallel Lines Cut by a Transversal 1 | Animated Math Clip Art--Parallel Lines Cut by a Transversal 1TopicParallel Lines DescriptionThis animated clip shows how a transversal intersects parallel lines, creating angles that illustrate the properties of parallel lines in geometry. In a classroom setting, utilizing this image can significantly enhance students’ understanding of parallel lines. The dynamic nature of animated clip art captures attention and can provide visual demonstrations that static images cannot. |
Parallel Lines |
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Animated Math Clip Art--Parallel Lines Cut by a Transversal 2 | Animated Math Clip Art--Parallel Lines Cut by a Transversal 2TopicParallel Lines DescriptionThis animated clip shows how a transversal intersects parallel lines, creating alternate interior angles that illustrate the properties of parallel lines in geometry. In a classroom setting, utilizing this image can significantly enhance students’ understanding of parallel lines. The dynamic nature of animated clip art captures attention and can provide visual demonstrations that static images cannot. |
Parallel Lines |
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Animated Math Clip Art--Parallel Lines Cut by a Transversal 3 | Animated Math Clip Art--Parallel Lines Cut by a Transversal 3TopicParallel Lines DescriptionThis animated clip shows how a transversal intersects parallel lines, creating alternate exterior angles that illustrate the properties of parallel lines in geometry. In a classroom setting, utilizing this image can significantly enhance students’ understanding of parallel lines. The dynamic nature of animated clip art captures attention and can provide visual demonstrations that static images cannot. |
Parallel Lines |
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Animated Math Clip Art--Parallel Lines Cut by a Transversal 4 | Animated Math Clip Art--Parallel Lines Cut by a Transversal 4TopicParallel Lines DescriptionThis animated clip shows how a transversal intersects parallel lines, creating corresponding angles that illustrate the properties of parallel lines in geometry. In a classroom setting, utilizing this image can significantly enhance students’ understanding of parallel lines. The dynamic nature of animated clip art captures attention and can provide visual demonstrations that static images cannot. |
Parallel Lines |
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Animated Math Clip Art--Parallel Lines Cut by a Transversal 5 | Animated Math Clip Art--Parallel Lines Cut by a Transversal 5TopicParallel Lines DescriptionThis animated clip shows how a transversal intersects parallel lines, creating vertical angles that illustrate the properties of parallel lines in geometry. In a classroom setting, utilizing this image can significantly enhance students’ understanding of parallel lines. The dynamic nature of animated clip art captures attention and can provide visual demonstrations that static images cannot. |
Parallel Lines |
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Animated Math Clip Art--Parallel Lines Cut by a Transversal 6 | Animated Math Clip Art--Parallel Lines Cut by a Transversal 6TopicParallel Lines DescriptionThis animated clip shows how a transversal intersects parallel lines, creating pairs of supplementary angles that illustrate the properties of parallel lines in geometry. In a classroom setting, utilizing this image can significantly enhance students’ understanding of parallel lines. The dynamic nature of animated clip art captures attention and can provide visual demonstrations that static images cannot. |
Parallel Lines |
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Animated Math Clip Art--Parallel Lines Cut by a Transversal 7 | Animated Math Clip Art--Parallel Lines Cut by a Transversal 7TopicParallel Lines DescriptionThis animated clip shows how a transversal intersects parallel lines, creating same side interior angles that illustrate the properties of parallel lines in geometry. In a classroom setting, utilizing this image can significantly enhance students’ understanding of parallel lines. The dynamic nature of animated clip art captures attention and can provide visual demonstrations that static images cannot. |
Parallel Lines |
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Animated Math Clip Art--Parallel Lines Cut by a Transversal 8 | Animated Math Clip Art--Parallel Lines Cut by a Transversal 8TopicParallel Lines DescriptionThis animated clip shows how a transversal intersects parallel lines, creating same side exterior angles that illustrate the properties of parallel lines in geometry. In a classroom setting, utilizing this image can significantly enhance students’ understanding of parallel lines. The dynamic nature of animated clip art captures attention and can provide visual demonstrations that static images cannot. |
Parallel Lines |
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Closed Captioned Video: Circumcenter of a Triangle | Closed Captioned Video: Circumcenter of a Triangle
In this TI Nspire tutorial, the Geometry window is used to construct a triangle and its circumcenter. This video supports the TI-Nspire Clickpad and Touchpad. This Mini-Tutorial Video includes a worksheet. . |
Geometric Constructions with Triangles |
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Closed Captioned Video: Circumscribing a Circle-Triangle | Closed Captioned Video: Circumscribing a Circle-Triangle
In this TI Nspire tutorial, the Geometry window is used to circumscribe a circle about a triangle. This video supports the TI-Nspire Clickpad and Touchpad. This Mini-Tutorial Video includes a worksheet. . |
Geometric Constructions with Triangles |
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Closed Captioned Video: Geometry Applications: Triangles | Closed Captioned Video: Geometry Applications: Triangles
In this program we explore the properties of triangle. We do this in the context of two real-world applications. In the first, we explore the triangular trusses in the Eiffel Tower and in the process learn about key properties of triangles. In the second application, we look at right-triangle-shaped sails on sail boat and why these are the ideal shape for efficient sailing. |
Definition of a Triangle and Applications of Triangles |
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Closed Captioned Video: Geometry Applications: Triangles, 1 | Closed Captioned Video: Geometry Applications: Triangles, Segment 1: Introduction
The Bank of China building in Hong Kong is a dramatic example of triangular support. The notion of triangular trusses is introduced, along with the key concepts developed in the rest of the program. |
Definition of a Triangle and Applications of Triangles |
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Closed Captioned Video: Geometry Applications: Triangles, 2 | Closed Captioned Video: Geometry Applications: Triangles, Segment 2: Triangles
The Eiffel Tower includes quite a number of exposed triangular trusses. The properties of triangles are used to explore and explain the frequent use of triangular trusses in many building. In particular, isosceles and equilateral triangular trusses are explored. In addition triangle postulates and similarity are explored and analyzed. |
Definition of a Triangle and Applications of Triangles |
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Closed Captioned Video: Geometry Applications: Triangles, 3 | Closed Captioned Video: Geometry Applications: Triangles, Segment 3: Right Triangles
The ancient port city of Corinth in Greece allows us to explore the evolution of sailing. The shapes of sails went from rectangular to triangular. The use of right-triangle-shaped sails changed the nature of sailing. Becoming less reliant on oarsmen and being able to sail under nearly any wind conditions, the sailboat made the conquest of the seas possible. We explore the properties of right triangles that make such sails ideal. |
Definition of a Triangle and Applications of Triangles |
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Closed Captioned Video: Orthocenter of a Triangle | Closed Captioned Video: Orthocenter of a Triangle
In this TI Nspire tutorial the Geometry window is used to construct the orthocenter of a triangle. This video supports the TI-Nspire Clickpad and Touchpad. This Mini-Tutorial Video includes a worksheet. . This is part of a collection of closed captioned videos on various math topics. To see the complete collection of the videos, click on this link. Note: The download is Media4Math's guide to closed captioned videos.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab.Video TranscriptsThis video has a transcript available. To see the complete collection of video transcripts, click on this link. |
Geometric Constructions with Triangles |
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Collections in a Box: Parallel and Perpendicular Lines | This cheat sheet gathers together the resources on the topic of parallel and perpendicular lines. See the descriptions and links below. Each link takes you to a collection of resources around that topic. The middle column indicates the number of resources available and the third column takes you to page on Media4Math where those resources can be found. Subscribers can download the PDF version of this cheat sheet. Click Preview to see the HTML version. |
Geometric Constructions with Points and Lines, Parallel Lines and Perpendicular Lines |
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Definition--Geometry Basics--Perpendicular Bisector | Perpendicular BisectorTopicGeometry Basics DefinitionA line that divides a segment into two equal parts at a 90-degree angle. DescriptionA perpendicular bisector is a line that divides a line segment into two equal parts at a right angle (90 degrees). This concept is essential in geometry for constructing and analyzing geometric shapes. For example, the perpendicular bisectors of the sides of a triangle intersect at the circumcenter, which is equidistant from all vertices of the triangle. Understanding perpendicular bisectors is crucial for solving problems related to symmetry and geometric constructions. |
Definition of a Line |
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Definition--Theorems and Postulates--Exterior Angle Theorem | Definition--Theorems and Postulates--Exterior Angle Theorem
This is part of a collection of definitions of geometric theorems and postulates. |
Definition of a Triangle |
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Definition--Theorems and Postulates--Perpendicular Bisector Theorem | Definition--Theorems and Postulates--Perpendicular Bisector Theorem
This is part of a collection of definitions of geometric theorems and postulates. |
Definition of a Line |
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Geometry Applications, Triangles, Segment 1, Introduction | VIDEO: Geometry Applications: Triangles, Segment 1: Introduction
The Bank of China building in Hong Kong is a dramatic example of triangular support. The notion of triangular trusses is introduced, along with the key concepts developed in the rest of the program. |
Applications of Triangles and Definition of a Triangle |
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Google Earth Voyager Story: The Geometry of City Planning, Part 1 | Google Earth Voyager Story: The Geometry of City Planning, Part 1TopicGeometric Models |
Perpendicular Lines and Parallel Lines |
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Google Earth Voyager Story: The Geometry of City Planning, Part 2 | Google Earth Voyager Story: The Geometry of City Planning, Part 2TopicGeometric Models |
Perpendicular Lines, Parallel Lines and Applications of Points and Lines |
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INSTRUCTIONAL RESOURCE: Math Examples 43 | INSTRUCTIONAL RESOURCE: Math Examples--Quadrilateral Classification
This set of tutorials provides 34 examples of the types of quadrilaterals and how to classify quadrilaterals based on the sides and angles. This is part of a collection of math examples for a variety of math topics. To see the complete collection of these resources, click on this link. Note: The download is a PPT file.Library of Instructional ResourcesTo see the complete library of Instructional Resources , click on this link. |
Definition of a Quadrilateral |
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INSTRUCTIONAL RESOURCE: Math Examples 46 | INSTRUCTIONAL RESOURCE: Math Examples--Right Triangles
This set of tutorials provides 26 examples of how to find the length of a side of a triangle using given angle or side measurements. This is part of a collection of math examples for a variety of math topics. To see the complete collection of these resources, click on this link. Note: The download is a PPT file.Library of Instructional ResourcesTo see the complete library of Instructional Resources , click on this link. |
Right Triangles |
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INSTRUCTIONAL RESOURCE: Nspire App Tutorial: Constructing an Isosceles Triangle | In this Slide Show, we show how to construct an isosceles triangle. This presentation requires the use of the TI-Nspire iPad App. Note: the download is a PPT. |
Definition of a Triangle and Geometric Constructions with Triangles |
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INSTRUCTIONAL RESOURCE: TI-Nspire App Activity: Constructing an Isosceles Triangle | In this Slide Show, learn how to use the TI-Nspire App to construct an isosceles triangle. Note: The download is a PPT file. |
Definition of a Triangle and Geometric Constructions with Triangles |
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Interactive Crossword Puzzle--Triangles | Interactive Crossword Puzzle--Triangles
This interactive crossword puzzle tests knowledge of key terms on the topic of triangles. This is part of a collection of math games and interactives. To see the complete collection of the games, click on this link. Note: The download is the teacher's guide.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab. |
Definition of a Triangle |
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Interactive Math Game: Math Riddles--Triangles | Interactive Math Game: Math Riddles--Triangles
In this Math Riddles Game, have your students review vocabulary around the topic of triangles. The Math Riddles games are useful for practicing: Math Vocabulary, Key Concepts, Critical Thinking. This is part of a collection of math games and interactives. To see the complete collection of the games, click on this link. Note: The download is the teacher's guide.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab. |
Definition of a Triangle |
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Interactive Word Search Puzzle--Triangles, Puzzle 1 | Interactive Word Search Puzzle--Triangles, Puzzle 1
Solve an interactive word search puzzle on the topic of Triangles. This is part of a collection of math games and interactives. To see the complete collection of the games, click on this link. Note: The download is the teacher's guide.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab. |
Definition of a Triangle |
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Interactive Word Search Puzzle--Triangles, Puzzle 2 | Interactive Word Search Puzzle--Triangles, Puzzle 2
Solve an interactive word search puzzle on the topic of Triangles. This is part of a collection of math games and interactives. To see the complete collection of the games, click on this link. Note: The download is the teacher's guide.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab. |
Definition of a Triangle |
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Interactive Word Search Puzzle--Triangles, Puzzle 3 | Interactive Word Search Puzzle--Triangles, Puzzle 3
Solve an interactive word search puzzle on the topic of Triangles. This is part of a collection of math games and interactives. To see the complete collection of the games, click on this link. Note: The download is the teacher's guide.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab. |
Definition of a Triangle |
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Interactive Word Search Puzzle--Triangles, Puzzle 4 | Interactive Word Search Puzzle--Triangles, Puzzle 4
Solve an interactive word search puzzle on the topic of Triangles. This is part of a collection of math games and interactives. To see the complete collection of the games, click on this link. Note: The download is the teacher's guide.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab. |
Definition of a Triangle |
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Interactive Word Search Puzzle--Triangles, Puzzle 5 | Interactive Word Search Puzzle--Triangles, Puzzle 5
Solve an interactive word search puzzle on the topic of Triangles. This is part of a collection of math games and interactives. To see the complete collection of the games, click on this link. Note: The download is the teacher's guide.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab. |
Definition of a Triangle |
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Math Clip Art--Angle Illustrations--Adjacent Angles--Labeled | Math Clip Art--Angle Illustrations--Adjacent Angles--Labeled
This is part of a collection of clip art images showing different types of angles. Each type of angle measure includes a labeled and unlabeled version. |
Angles and Applications of Angles and Planes |
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Math Clip Art--Angle Illustrations--Adjacent Angles--Unlabeled | Math Clip Art--Angle Illustrations--Adjacent Angles--Unlabeled
This is part of a collection of clip art images showing different types of angles. Each type of angle measure includes a labeled and unlabeled version. |
Angles and Applications of Angles and Planes |
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Math Clip Art--Angle Illustrations--Supplementary Angles--Labeled | Math Clip Art--Angle Illustrations--Supplementary Angles--Labeled
This is part of a collection of clip art images showing different types of angles. Each type of angle measure includes a labeled and unlabeled version. |
Angles and Applications of Angles and Planes |
