Please can someone help me with the answer to this puzzle. (A large rock has been perched on the side of a mountain for many years.)

What change would it make if he suddenly rolled down the mountain?

please...

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?