How many elements are in the symmetry group of a nonrectangle parallelogram?
A) 1
B) 2
C) 4
D) 0

Name: How many elements are in the symmetry group of a nonrectangle parallelogram? A) 1 B) 2 C) 4 D) 0
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Question

Quizplus · Accepted Answer

A non-rectangle parallelogram has 2 elements in its symmetry group: the identity (doing nothing) and a reflection across the axis that bisects the parallelogram through opposite vertices. It does not have rotational symmetry of 90 or 180 degrees like a rectangle or square, hence only 2 symmetries.

How Many Elements Are in the Symmetry Group of a Nonrectangle