Question

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

Answer 1

Answer:

90° clockwise

Step-by-step explanation:

Answer 2

The correct answer is:

90° clockwise

Explanation:

Comparing the image points to the pre-image points, we can see that in every ordered pair, x and y have been switched and x has been negated.  Algebraically, this means (x, y)→(y, -x).

This is the same mapping that a 90° clockwise rotation performs, so that is our answer.