Question

A triangle with vertices L(-1,5), M-1, 7), and MC-8,5) is rotated 270° counterclockwise about the origin.A. L(-5, 1), M(-7, 1), N(-5, 8)B. L(1, 5), M(1, 7), N(8, 5)C. L(5, 1), M(7, 1), N(5, 8)D. L(5, -1), M(7, 1), N(5, -8)

Answer 1

when rotating a point 270° counterclockwise, any point (x,y) becomes (y,-x)

So,

L(-1,5), M( -1, 7), and N(-8,5)

L (-1,5) ⇒ L' (5,1)

M (-1,7) ⇒ M' (7,1)

N(5,1) ⇒ N'(5,8)

Correct option: C. L(5, 1), M(7, 1), N(5, 8)