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One vertex of a polygon is located at (3,-2)
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One vertex of a polygon is located at (3,-2)

User Ekchang
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preimage: (3,-2)
image (2,3)

Then use counterclockwise rotation of 90 degrees
(x,y)->(-y,x) which means
(3,-2) -> (2,3)

So the transformation is a counterclockwise rotation of 90 degrees.

User Jeff Wilbert
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