Question

Triangle A is rotated 90-degrees clockwise about the origin. Which triangle is the image of this rotation? *

B
C
D
none of these

Answer 1

The answer is B

Explanation:

The equation for a 90 degree clockwise rotation is (x,y) -> (y,-x)

so (-2, 2) -> (2,2). You can also look up "rotation calculator", it really helped me get through this unit haha