Question

The vertices of a figure are given. Draw the figure and its rotation as described. Identify the coordinates of the image.

A(2,−2), B(4,−1), C(4,−3), D(2,−4)
90° counterclockwise about the origin

A'=?
B'=?
C'=?
D'=?

Answer 1

A'(2,2)B'(1,4)C'(3,4)D'(4,2)

Explanation:

(x,y) -> (-y,x)