Ratios in Right Triangles

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Geometry: Triangles

Level

9-12

Activity Time

90 Minutes

Software

TI Connect™

TI Calculator

TI-83 Plus Family

TI-84 Plus

TI-84 Plus Silver Edition

Applications

Cabri™ Jr. for TI-83 Plus and TI-84 Plus

Other Materials

This is Activity 17 from the EXPLORATIONS Book:
Cabri™ Jr.: Interactive Geometry Activities and Investigations.

Resource Types

Lessons

Report an Issue

Ratios in Right Triangles

Activity Overview

The study of properties of right triangles is a major topic in mathematics. In this activity, you will investigate three common right triangle trigonometric ratios.

Before the Activity

Install the Cabri Jr. App on the students' graphing calculators using TI-Connect™, a TI Connectivity Cable and the Unit-to-Unit Link Cable

Use the TI-Navigator™ to transfer the attached Cabri Jr. AppVar files to each calculator

See the attached PDF file for detailed instructions for this activity

Print pages 105 - 106 from the attached PDF file for your class

During the Activity

Distribute the pages to your class.

Follow the Activity procedures:

Construct a right triangle

Measure the lengths of the sides of the triangle and the interior angles of the triangle

Calculate the ratio of the length of sides and observe the effects of changing the measure of an angle or the length of a side

After the Activity

Review student results:

As a class, discuss questions that appeared to be more challenging

Re-teach concepts as necessary

Download Files

Download All Files (ZIP)

Before the Activity Files

Teacher Notes Appendix A PDF Teacher Notes Appendix B PDF Teacher Notes PDF CBIG1701.8xv

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Geometry: Triangles

Level

9-12

Activity Time

90 Minutes

Software

TI Connect™

TI Calculator

TI-83 Plus Family

TI-84 Plus

TI-84 Plus Silver Edition

Applications

Cabri™ Jr. for TI-83 Plus and TI-84 Plus

Other Materials

This is Activity 17 from the EXPLORATIONS Book:
Cabri™ Jr.: Interactive Geometry Activities and Investigations.

Resource Types

Lessons

Report an Issue

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Ratios in Right Triangles

Cabri™ Jr. for TI-83 Plus and TI-84 Plus

Ratios in Right Triangles

Before the Activity Files

Cabri™ Jr. for TI-83 Plus and TI-84 Plus

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