Question

A square with corners at A(2, 1), B(9, 1), C(9, 8), and D(2, 8) is rotated 180 degrees counterclockwise about the origin to produce image A'B'C'D'. At which point is image corner B' located?

Answer 1

B'(-9, -1)

Explanation:

Rule for rotating 180° : (x, y) →(-x, -y)

A square with corners at A(2, 1), B(9, 1), C(9, 8), and D(2, 8) if rotated 180 degrees counterclockwise about the origin will produce image A'( -2,-1), B'(-9, -1), C'(-9,-8), D'(-2, -8).

At which point is image corner B' located?

B'(-9, -1)