Illustrative Math Alignment: Grade 7 Unit 7

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.

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. Note: The download for this resources is the Promethean Flipchart.

A full video is available here [Geometry Applications: Triangles, Segment 3: Right Triangles]: https://media4math.com/library/geometry-applications-triangles-segment-3-right-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. Note: The download for this resources is the Promethean Flipchart.

This video includes a video transcript: https://media4math.com/library/video-transcript-geometry-applications-triangles

To view the video Geometry Applications: Triangles: https://www.media4math.com/library/geometry-applications-triangles

This is part of a collection of math video definitions related to to the topic of polynomials. Note: The download is an MP4 video.

This is part of a collection of math video definitions related to to the topic of polynomials. Note: The download is an MP4 video.

This is the transcript for the video entitled, Desmos Geometry Exploration: Classifying Triangle by Angle. In this video tutorial triangles are classified by the types of angles that make up the triangle. Students are then shown how to construct such triangles using the Desmos geometry tools.

The Desmos geometry tools can be found at www.desmos.com/geometry. The video is available for this tutorial at this link: https://www.media4math.com/library/video-tutorial-desmos-geometry-exploration-classifying-triangles-angle. Note: The download is a PDF file.

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Desmos Collection

To see the complete collection of Desmos Resources go to this link: https://www.media4math.com/desmos-resources.

Note: The download is a PDF file.

This is the transcript for the video entitled, Desmos Geometry Exploration: Classifying Triangle by Side. In this video tutorial triangles are classified by the side lengths that make up the triangle. Students are then shown how to construct such triangles using the Desmos geometry tools.

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.

To see the complete collection of video transcriptsy, click on this link.

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.

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.

To see the complete collection of video transcriptsy, click on this link.

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.

This is the transcript for the video of same title. Video contents: 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.

This is the transcript for the TI-Nspire Mini-Tutorial entitled, Circumscribing a Circle about a Triangle.

To see the complete collection of video transcriptsy, click on this link.

This is the transcript for the TI-Nspire Mini-Tutorial entitled, Constructing the Circumcenter of a Triangle.

To see the complete collection of video transcriptsy, click on this link.

This is the transcript for the TI-Nspire Mini-Tutorial entitled, Constructing the Orthocenter of a Triangle.

To see the complete collection of video transcriptsy, click on this link.

What Are Polynomials?

This is part of a collection of video tutorials on the topic of using the Desmos Geometry tools to explore geometric concepts.

This is part of a collection of video tutorials on the topic of using the Desmos Geometry tools to explore geometric concepts.

This is part of a collection of video tutorials on the topic of using the Desmos Geometry tools to explore geometric concepts.

In this video learn about the properties of isosceles triangles. The video includes real-world examples of isosceles triangles.

In this video tutorial learn about perimeter in the context of triangles. Several examples of calculating a perimeter are shown: whole number sides, decimal sides. Then we look at triangles one of whose sides is a variable. The resulting perimeter is an algebraic expression. Finally, explore a situation where the perimeter is known but one of the side lengths is a variable. This results in an equation that can be solved for the variable.

In this video explore the relationship between slope and similar triangles.

In this program we explore the properties of triangles. 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.

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.

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.

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.

This is part of a collection of math worksheets that are crossword puzzles of math vocabulary.

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Worksheet Library

This is part of a collection of math worksheets on the use of the TI-Nspire graphing calculator. Each worksheet supports a companion TI-Nspire Mini-Tutorial video. It provides all the keystrokes for the activity.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the use of the TI-Nspire graphing calculator. Each worksheet supports a companion TI-Nspire Mini-Tutorial video. It provides all the keystrokes for the activity.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the use of the TI-Nspire graphing calculator. Each worksheet supports a companion TI-Nspire Mini-Tutorial video. It provides all the keystrokes for the activity.

Related Resources

Worksheet Library

Solve a word search puzzle on the topic of Triangles.

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Solve a word search puzzle on the topic of Triangles.

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Solve a word search puzzle on the topic of Triangles.

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Solve a word search puzzle on the topic of Triangles.

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Solve a word search puzzle on the topic of Triangles.

Related Resources