pentagon' is pentagon rotated around point O.[br][br]Use the slider and change the angle of rotation until pentagon' and pentagon are in the same position.[br][br]Hint: you can use the -1 and the +1 buttons to more precisely control the angles.
What angles of rotation result in pentagon' being in the exact same location as pentagon?
What are the interior angles of a regular pentagon?
What are the exterior angles of a regular pentagon?