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QuizMultiple Choice

Rotations

Question 1 • ! MCHS (CR25) - GEOMETRY

A pentagon is transformed according to the rule R0, 180°. Which is another way to state the transformation?

Answer
A
(x, y) → (–x, –y)
B
(x, y) → (–y –x)
C
(x, y) → (x, –y)
D
(x, y) → (–x, y)

Explanation

A rotation of 180° about the origin sends each point to the point directly opposite across the origin. Its coordinate rule is (x, y) → (−x, −y), so choice A is correct. The other rules describe reflections, not a 180° rotation.

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