Question

Triangle GHJ and its image, triangle G’H’J’, are graphed on the coordinate grid below. On a coordinate plane, triangle G H J has points (2, 5), (3, 3), (1, 4). Triangle G prime H prime J prime has points (negative 5, 2), (negative 3, 3), (negative 4, 1). Which rotation, using the origin as the center of rotation, occurred?

a 90° clockwise rotation
a 90° counterclockwise rotation
a 45° clockwise rotation
a 45° counterclockwise rotation

Answer 1

guy above is right.

Explanation:

Answer 2

The rotation is 90° counter clockwise.

Explanation:

Triangle GHJ has the points G(2,5), H(3,3) and J(1,4)

And the coordinates changes after 90° counterclockwise rotation,

the points are changed from (x,y) to (-y, x) ,

so the triangle G'H'J' has the points G'(-5,2), H'(-3,3), J'(-4,1).