Polygon ABCD slides 4 units left and 3 units up on the coordinate plane. If the original measure of angle A was 75 degrees, what is the measure of angle A'?
A 75 degrees
B 100 degrees
C 105 degrees
D180 degrees
If the original measure of angle A was 75 degrees, the measure of angle A' would still be 75 degrees
, because the numbers never change. this rule is called Congruent: when you move an object, and it always has the same size and shape
