Question

Triangles DEF and D'E'F' are shown on the coordinate plane below:

Triangle DEF and triangle D prime E prime F prime with ordered pairs at D negative 1, 6, at E 1, 3, at F 6, 3, at D prime 1, negative 6, at E prime negative 1, negative 3, at F prime negative 6, negative 3.

What rotation was applied to triangle DEF to create triangle D'E'F'?

90° clockwise

180°

None of the above

90° counterclockwise