Education Technology

Special Segments in Triangles

Subject Area
Math: Geometry: Triangles
Level
9-12
Activity Time
45 Minutes
TI Calculator
TI-Nspire™ CX series
TI-Nspire™ CX CAS/CX II CAS
TI-Nspire Version
3.9
Resource Types
Lessons
Format
TNS

Special Segments in Triangles

Activity Overview

Create four special segments from a given vertex in a triangle and identify relationships among the special segments and the angles they form.

Objectives

  • Students will show why certain segments in triangles are medians, angle bisectors, altitudes, or perpendicular bisectors.
  • Students will interpret what properties these particular segments have.

Vocabulary

  • median
  • angle bisector
  • altitude
  • perpendicular bisector

About the Lesson

In this activity, students will investigate 4 special segments from a given vertex in a triangle and identify relationships among the special segments and the angles that they form. You decide if you want students to create the figure or to use a figure that has already been created. If you want students to create the figure, give each student a copy of the "Create" handout. This will explain clearly how to create the necessary figure.

Subject Area
Math: Geometry: Triangles
Level
9-12
Activity Time
45 Minutes
TI Calculator
TI-Nspire™ CX series
TI-Nspire™ CX CAS/CX II CAS
TI-Nspire Version
3.9
Resource Types
Lessons
Format
TNS
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