Pentagon - Rotational Symmetry

Rotate the pentagon by moving the [b]RED X [/b]around the circle. Note each time the rotating polygon rotates onto the original shaded pentagon.

How many times does a [b]REGULAR PENTAGON[/b] rotate onto itself until it is back to the beginning? Include the rotation 360°.

4 6 5 7

Choose the list that includes all rotational symmetries for a [b]REGULAR PENTAGON[/b]:

72°, 144°, 216°, 288°, 360° 90°, 180°, 270°, 360° 36°, 72°, 105°, 141°, 180° None of the above.

Information: Pentagon - Rotational Symmetry