Question

the steps to rotate an object at some desired angle​

Answer 1

Explanation:

This gives us these new rules: A point (a, b) rotated around a point (x, y) 90 degrees will transform to point (-(b-y) + x, (a-x) + y). A point (a, b) rotated around a point (x, y) 180 degrees will transform to point (-(a - x) + x, -(b - y) + y).