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Alignment
- Standards Alignment
- Textbook Alignment
Subject Area
- Math: Geometry: Transformational Geometry
Author

Texas Instruments
Level

9-12
Activity Time

15 Minutes
Device
- TI-Nspire™ Navigator™
- TI-Nspire™
- TI-Nspire™ CAS
Software

TI-Nspire™ CAS
TI-Nspire Version

2.0
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Transformations

Published on 08/03/2010

Activity Overview

Students reflect figures over the x- and y-axes, rotate figures 90°, 180°, and 270° counterclockwise about the origin, and write rules for each reflection and rotation.

Key Steps

In Problem 1, students investigate reflections.

Students will explore the triangle and its reflection to discover that the x-values of pre-image and image points are equal, while the y values are opposites.
In Problem 2, students will explore rotations of a quadrilateral.

ABCD is drawn in Quadrant 1. Students find and record the coordinates of both figures and discover the properties of rotated figures.