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If quadrilateral ABCD rotates 90° counterclockwise about the origin, what are the coordinates of A′ in quadrilateral A′B′C′D′ ?
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If quadrilateral ABCD rotates 90° counterclockwise about the origin, what are the coordinates of A′ in quadrilateral A′B′C′D′ ?

User Scott Thiessen
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2 Answers

6 votes

Answer:

B. (-2, -1)

Step-by-step explanation:

Plato

If quadrilateral ABCD rotates 90° counterclockwise about the origin, what are the-example-1
User Chacmool
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If the coordinates of point A are (x, y ) the coordinates of point A´ after rotation will be (-y, x)
Example: A ( 2,3 ) and A´( -3, 2 )
User Josep Panadero
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8.3k points
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