Question

Please help me.

Find the coordinate of B' after a 180° rotation of the triangle about the origin.

a. (1,2)
b. (3,5)
c. (3,-5)
d. (-3,-5)

Answer 1

D. (-3,-5) is the coordinate for B

Answer 2

b. (3, 5)

Explanation:

Rotation by 180° multiplies each coordinate by -1.

B' = -1×B = -(-3, -5) = (3, 5)