Question

Write the coordinates of the vertices after a rotation 90° counterclockwise around the origin.

Answer 1

Answer:(−y,x)

Explanation:

90° clockwise rotation: (x,y) becomes (y,−x) 90° counterclockwise rotation: (x,y) becomes (−y,x) 180° clockwise and counterclockwise rotation: (x,y) becomes (−x,−y) 270° clockwise rotation: (x,y) becomes (−y,x)