What is the angle of rotation symmetry for a shape that has rotational symmetry of order 5?

7. What is the angle of rotation symmetry for a shape that has rotational symmetry of order 5?
a. 144°
b. 36°
c. 72°
d. 75°
8. The angle of rotation symmetry for a shape is 60°. What is the order of rotational symmetry?
a. 6
b. 4
c. 3
d. 8