Contemporary Abstract Algebra
Contemporary Abstract Algebra
9th Edition
ISBN: 9781337249560
Author: Joseph Gallian
Publisher: Cengage Learning US
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Chapter 1, Problem 6E

In D n , explain geometrically why a reflection followed by a reflection must be a rotation.

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graph the image of A(-7, 6) after a reflection in y=x followed by a reflection in x=3
Give the rule for the composition of two 180 degree rotations with different centers A and B. We know that the order of rotations matters.
Describe the relationship between the coordinates of the pre-image and image in this 180 degrees clockwise rotation.
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Basic Reflection Trigonometric Identity; Author: Anil kumar;https://www.youtube.com/watch?v=y-EGUD49fmw;License: Standard YouTube License, CC-BY