Question

Triangle ABC has its vertices at the following coordinates:

A(-5, 2) B(-3, 1) C(-1, 5)

Give the coordinates of the image triangle A'B'C' after a 90° counterclockwise rotation about the origin.

Please explain how you got it

Answer 1

Answer:

A(-5, 2) B(-3, 1) C(-1, 5) ==> A(-2, -5) B(-1, -3) C(-5, -1)

Step-by-step explanation:

90° counterclockwise rotation about the origin: (x,y) > (-y,x)