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 Example--Solving Equations--Solving Equations with Angle Measures--Example 11 | Solving Equations with Angle Measures--Example 11TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 12 | Solving Equations with Angle Measures--Example 12TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 13 | Solving Equations with Angle Measures--Example 13TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 14 | Solving Equations with Angle Measures--Example 14TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 15 | Solving Equations with Angle Measures--Example 15TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 2 | Solving Equations with Angle Measures--Example 2TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 3 | Solving Equations with Angle Measures--Example 3TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 4 | Solving Equations with Angle Measures--Example 4TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 5 | Solving Equations with Angle Measures--Example 5TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 6 | Solving Equations with Angle Measures--Example 6TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 7 | Solving Equations with Angle Measures--Example 7TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 8 | Solving Equations with Angle Measures--Example 8TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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Math Example--Solving Equations--Solving Equations with Angle Measures--Example 9 | Solving Equations with Angle Measures--Example 9TopicEquations |
Solving Multistep Equations and Applications of Angles and Planes |
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MATH EXAMPLES--Teacher's Guide: Quadrilateral Classification | MATH EXAMPLES--Teacher's Guide: 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 teacher's guides. To see the complete collection of teacher's guides, click on this link. Note: The download is a PDF file.Related ResourcesTo see resources related to this topic click on the Related Resources tab above. |
Definition of a Quadrilateral |
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MATH EXAMPLES--Teacher's Guide: Right Triangles | MATH EXAMPLES--Teacher's Guide: 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 teacher's guides. To see the complete collection of teacher's guides, click on this link. Note: The download is a PDF file.Related ResourcesTo see resources related to this topic click on the Related Resources tab above. |
Right Triangles |
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MATH EXAMPLES--Teacher's Guide: Triangle Area and Perimeter | MATH EXAMPLES--Teacher's Guide: Triangle Area and Perimeter
This set of tutorials provides 40 examples of how to find the area and perimeter of triangles. This is part of a collection of teacher's guides. To see the complete collection of teacher's guides, click on this link. Note: The download is a PDF file.Related ResourcesTo see resources related to this topic click on the Related Resources tab above. |
Area and Perimeter of Triangles |
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MATH EXAMPLES--Teacher's Guide: Triangle Classification | MATH EXAMPLES--Teacher's Guide: Triangle Classification
This set of tutorials provides 24 examples that show how to identify different types of triangles and how to solve for x using the properties of triangles. This is part of a collection of teacher's guides. To see the complete collection of teacher's guides, click on this link. Note: The download is a PDF file.Related ResourcesTo see resources related to this topic click on the Related Resources tab above. |
Definition of a Triangle |
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MATH EXAMPLES--Triangle Area and Perimeter | MATH EXAMPLES--Triangle Area and Perimeter
This set of tutorials provides 40 examples of how to find the area and perimeter of triangles. NOTE: The download is a PPT file. |
Area and Perimeter of Triangles |
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MATH EXAMPLES--Triangle Classification | MATH EXAMPLES--Triangle Classification
This set of tutorials provides 24 examples that show how to identify different types of triangles and how to solve for x using the properties of triangles. NOTE: The download is a PPT file. |
Definition of a Triangle |
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Test Prep Interactive Quiz--Classifying Angles | Test Prep Interactive Quiz--Classifying Angles
This is part of a collection of self-scoring interactive math quizzes on a variety of topics. To see the complete of these quizzes, 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.Quiz LibraryTo see the complete collection of Quizzes, click on this link.ary">click on this link. |
Definition of an Angle |
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Video Transcript: Desmos Geometry Exploration: Triangle Basics | Video Transcript: Desmos Geometry Exploration: Triangle Basics
This is the transcript for the video entitled, Desmos Geometry Exploration: Triangle Basics. In this video tutorial the basics of triangles are explored. Students are then shown how to construct triangles using the Desmos geometry tools. This is part of a collection of video transcript for the video tutorial series on using the Desmos Geometry Tools. To see the complete collection of transcripts, click on this link. Note: The download is a PDF file. Video Transcript LibraryTo see the complete collection of video transcriptsy, click on this link. |
Definition of a Triangle and Geometric Constructions with Triangles |
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Video Transcript: Geometry Applications: Triangles | Video Transcript: Geometry Applications: Triangles
This is the transcript for the video of same title. Video contents: 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. |
Applications of Triangles |
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Video Transcript: Geometry Applications: Triangles, Segment 1: Introduction | Video Transcript: Geometry Applications: Triangles, Segment 1: Introduction
This is the transcript for the video of same title. Video contents: 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. This is part of a collection of video transcript from the Geometry Applications video series. To see the complete collection of transcripts, click on this link. Note: The download is a PDF file. Video Transcript LibraryTo see the complete collection of video transcriptsy, click on this link. |
Applications of Triangles |
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Video Transcript: Geometry Applications: Triangles, Segment 2: Triangles | Video Transcript: Geometry Applications: Triangles, Segment 2: Triangles
This is the transcript for the video of same title. Video contents: 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. |
Applications of Triangles |
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Video Transcript: TI-Nspire Mini-Tutorial: Circumscribing a Circle about a Triangle | Video Transcript: TI-Nspire Mini-Tutorial: Circumscribing a Circle about a Triangle
This is the transcript for the TI-Nspire Mini-Tutorial entitled, Circumscribing a Circle about a Triangle. This is part of a collection of video transcripts for the video tutorial series on using the TI-Nspire Graphing Calculator. To see the complete collection of transcripts, click on this link. Note: The download is a PDF file. Video Transcript LibraryTo see the complete collection of video transcriptsy, click on this link. |
Geometric Constructions with Triangles |
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Video Transcript: TI-Nspire Mini-Tutorial: Constructing the Circumcenter of a Triangle | Video Transcript: TI-Nspire Mini-Tutorial: Constructing the Circumcenter of a Triangle
This is the transcript for the TI-Nspire Mini-Tutorial entitled, Constructing the Circumcenter of a Triangle. This is part of a collection of video transcripts for the video tutorial series on using the TI-Nspire Graphing Calculator. To see the complete collection of transcripts, click on this link. Note: The download is a PDF file. Video Transcript LibraryTo see the complete collection of video transcriptsy, click on this link. |
Geometric Constructions with Triangles |
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Video Transcript: TI-Nspire Mini-Tutorial: Constructing the Orthocenter of a Triangle | Video Transcript: TI-Nspire Mini-Tutorial: Constructing the Orthocenter of a Triangle
This is the transcript for the TI-Nspire Mini-Tutorial entitled, Constructing the Orthocenter of a Triangle. This is part of a collection of video transcripts for the video tutorial series on using the TI-Nspire Graphing Calculator. To see the complete collection of transcripts, click on this link. Note: The download is a PDF file. Video Transcript LibraryTo see the complete collection of video transcriptsy, click on this link. |
Geometric Constructions with Triangles |
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Video Tutorial: Desmos Geometry Exploration: Classifying Triangles by Angle | Video Tutorial: Desmos Geometry Exploration: Classifying Triangles by Angle
This is part of a collection of video tutorials on the topic of using the Desmos Geometry tools to explore geometric concepts. |
Definition of a Triangle and Geometric Constructions with Triangles |
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Video Tutorial: Desmos Geometry Exploration: Triangle Basics | Video Tutorial: Desmos Geometry Exploration: Triangle Basics
This is part of a collection of video tutorials on the topic of using the Desmos Geometry tools to explore geometric concepts. |
Definition of a Triangle and Geometric Constructions with Triangles |
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Video Tutorial: Parallel Lines Cut by a Transversal: Example 1 | This is part of a collection of video tutorials on parallel lines cut by a transversal. Using the properties of these lines, the value of an unknown angle is calculated. Note: The download is a PDF template for use in modeling the examples shown in the videos. |
Parallel Lines |
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Video Tutorial: Parallel Lines Cut by a Transversal: Example 2 | This is part of a collection of video tutorials on parallel lines cut by a transversal. Using the properties of these lines, the value of an unknown angle is calculated. Note: The download is a PDF template for use in modeling the examples shown in the videos. |
Parallel Lines |
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Video Tutorial: Parallel Lines Cut by a Transversal: Example 3 | This is part of a collection of video tutorials on parallel lines cut by a transversal. Using the properties of these lines, the value of an unknown angle is calculated. Note: The download is a PDF template for use in modeling the examples shown in the videos. |
Parallel Lines |
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Video Tutorial: Parallel Lines Cut by a Transversal: Example 4 | This is part of a collection of video tutorials on parallel lines cut by a transversal. Using the properties of these lines, the value of an unknown angle is calculated. Note: The download is a PDF template for use in modeling the examples shown in the videos. |
Parallel Lines |
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Video Tutorial: Parallel Lines Cut by a Transversal: Example 5 | This is part of a collection of video tutorials on parallel lines cut by a transversal. Using the properties of these lines, the value of an unknown angle is calculated. Note: The download is a PDF template for use in modeling the examples shown in the videos. |
Parallel Lines |
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Video Tutorial: Parallel Lines Cut by a Transversal: Example 6 | This is part of a collection of video tutorials on parallel lines cut by a transversal. Using the properties of these lines, the value of an unknown angle is calculated. Note: The download is a PDF template for use in modeling the examples shown in the videos. |
Parallel Lines |
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Video Tutorial: Parallel Lines Cut by a Transversal: Example 7 | This is part of a collection of video tutorials on parallel lines cut by a transversal. Using the properties of these lines, the value of an unknown angle is calculated. Note: The download is a PDF template for use in modeling the examples shown in the videos. |
Parallel Lines |
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Video Tutorial: Parallel Lines Cut by a Transversal: Example 8 | This is part of a collection of video tutorials on parallel lines cut by a transversal. Using the properties of these lines, the value of an unknown angle is calculated. Note: The download is a PDF template for use in modeling the examples shown in the videos. |
Parallel Lines |
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VIDEO: Geometry Applications: Triangles | VIDEO: Geometry Applications: Triangles
TopicTriangles |
Definition of a Triangle and Applications of Triangles |
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VIDEO: Geometry Applications: Triangles, 1 | VIDEO: Geometry Applications: Triangles, 1
TopicTriangles DescriptionThis video introduces the importance of triangles in architecture and structural design. It highlights the use of triangles in structures like the Bank of China Tower in Hong Kong, noting their ability to provide strength and stability. The video focuses on the role of triangles in reinforcing skyscrapers to withstand strong winds, especially during typhoon seasons. Key vocabulary includes architectural support, triangular base, and stability. The video sets up a foundation for exploring how triangle properties are applied in real-world contexts. |
Definition of a Triangle and Applications of Triangles |
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VIDEO: Geometry Applications: Triangles, 2 | VIDEO: Geometry Applications: Triangles, 2
TopicTriangles |
Applications of Triangles |
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VIDEO: Geometry Applications: Triangles, 3 | VIDEO: Geometry Applications: Triangles, 3
TopicTriangles |
Applications of Triangles and Definition of a Triangle |
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VIDEO: Ti-Nspire Mini-Tutorial, Video 38 | VIDEO: TI-Nspire Mini-Tutorial: Circumscribing a Circle about a 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. |
Geometric Constructions with Triangles |
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VIDEO: Ti-Nspire Mini-Tutorial, Video 51 | VIDEO: TI-Nspire Mini-Tutorial: Constructing the 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. |
Geometric Constructions with Triangles |
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VIDEO: Ti-Nspire Mini-Tutorial, Video 52 | VIDEO: TI-Nspire Mini-Tutorial: Constructing the 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. |
Geometric Constructions with Triangles |
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Worksheet: Crossword Puzzle--Triangles | Worksheet: Crossword Puzzle--Triangles
This is part of a collection of math worksheets that are crossword puzzles of math vocabulary. To see the complete worksheet collection on this topic, click on this link. Note: The download is a PDF file.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab.Worksheet LibraryTo see the complete collection of Worksheets, click on this link. |
Definition of a Triangle |
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Worksheet: Identifying Shapes, Worksheet 1 | Worksheet: Identifying Shapes, Worksheet 1
This is part of a collection of math worksheets on the topic of geometric shapes. To see the complete worksheet collection on this topic, click on this link. Note: The download is a PDF file.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab.Worksheet LibraryTo see the complete collection of Worksheets, click on this link. |
Definition of a Circle, Definition of a Polygon and Definition of a Triangle |
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Worksheet: Identifying Shapes, Worksheet 2 | Worksheet: Identifying Shapes, Worksheet 2
This is part of a collection of math worksheets on the topic of geometric shapes. To see the complete worksheet collection on this topic, click on this link. Note: The download is a PDF file.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab.Worksheet LibraryTo see the complete collection of Worksheets, click on this link. |
Definition of a Circle, Definition of a Polygon and Definition of a Triangle |
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Worksheet: Identifying Shapes, Worksheet 3 | Worksheet: Identifying Shapes, Worksheet 3
This is part of a collection of math worksheets on the topic of geometric shapes. To see the complete worksheet collection on this topic, click on this link. Note: The download is a PDF file.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab.Worksheet LibraryTo see the complete collection of Worksheets, click on this link. |
Definition of a Circle, Definition of a Polygon and Definition of a Triangle |
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Worksheet: Identifying Shapes, Worksheet 4 | Worksheet: Identifying Shapes, Worksheet 4
This is part of a collection of math worksheets on the topic of geometric shapes. To see the complete worksheet collection on this topic, click on this link. Note: The download is a PDF file.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab.Worksheet LibraryTo see the complete collection of Worksheets, click on this link. |
Definition of a Circle, Definition of a Polygon and Definition of a Triangle |
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Worksheet: Using the Distance Formula to Calculate Triangular Area, Worksheet 01 | Worksheet: Using the Distance Formula to Calculate Triangular Area, Worksheet 01
This is part of a collection of math worksheets on the topic of using the distance formula to calculate length, area, or perimeter. To see the complete worksheet collection on this topic, click on this link. Note: The download is a PDF file.Related ResourcesTo see additional resources on this topic, click on the Related Resources tab.Worksheet LibraryTo see the complete collection of Worksheets, click on this link. |
Distance Formula and The Distance Formula |
