An irregular parallelogram rotates 360° about the midpoint of its diagonal. how many times does the image of the parallelogram coincide with its preimage during the rotation? 2 4 6 8

2

You can rotate the parallelogram twice to have it line up with itself (180 degrees, 360 degrees). An irregular parallelogram is one that has two sets of different sides. In other words, this parallelogram is not a rhombus. Recall that a rhombus has all 4 sides equal.