Areas of Polygons

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Algebra II: Matrices

Level

9-12

Activity Time

45 Minutes

Software

TI-Nspire™ CX
TI-Nspire™ CX CAS

TI Calculator

TI-Nspire™ CX series

TI-Nspire™ CX CAS/CX II CAS

TI-Nspire Version

5.0

Resource Types

Lessons

Format

TNS

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Areas of Polygons

Activity Overview

Use determinants of matrices as a tool to find the areas of triangles and quadrilaterals.

Objectives

Discover the determinant method for finding the areas of triangles and quadrilaterals

Vocabulary

determinant
scalar multiple
convex/concave polygons

About the Lesson

This lesson involves using determinants of matrices as a tool to find the areas of triangles and quadrilaterals. As a result, students will:

Identify the correct scalar multiple for the determinant expression to find the area of a triangle.
Identify the determinate expression to find the area of a quadrilateral.

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Lesson Files

Teacher Notes PDF Student Activity DOC Student Activity PDF TI-Nspire Activity TNS Create DOC Create PDF Create TNS_Solution

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Algebra II: Matrices

Level

9-12

Activity Time

45 Minutes

Software

TI-Nspire™ CX
TI-Nspire™ CX CAS

TI Calculator

TI-Nspire™ CX series

TI-Nspire™ CX CAS/CX II CAS

TI-Nspire Version

5.0

Resource Types

Lessons

Format

TNS

Report an Issue

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Areas of Polygons

Areas of Polygons

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