Explanation Let A ′ B ′ C ′ D ′ be the rotation of the rectangle ABCD at 90 ° about point P . Since 90 ° is positive, the rotation should be in counterclockwise direction. The line segments AB and DC in the rectangle ABCD are horizontal, but after rotating the rectangle ABCD , the line segment A ′ B ′ and D ′ C ′ will be vertical. Similarly, the line segments AD and BC in the rectangle ABCD are vertical, but after rotating the rectangle ABCD , the line segment A ′ D ′ and B ′ C ′ will be horizontal

A Survey of Mathematics with Applications (10th Edition) - Standalone book

10th Edition

ISBN: 9780134112107

Author: Allen R. Angel, Christine D. Abbott, Dennis Runde

Publisher: PEARSON

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Chapter 8, Problem 43RE

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The rectangle ABCD have 90° rotational symmetry about the point P or not.

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Chapter 8, Problem 42RE

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The rectangle ABCD have 90 ° rotational symmetry about the point P or not.

Solution Summary: The author explains that the rectangle ABCD does not have 90° rotational symmetry about the point P.

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The rectangle ABCD have 90° rotational symmetry about the point P or not.

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