The diagram shows the universal set U = {parallelograms}.

Set A represents parallelograms with four congruent sides, while B represents parallelograms with four congruent angles.

How many of the parallelograms fall into the category A U B?

(The picture of the diagram is provided.)

A. 6
B. 8
C. 18
D. 26

The diagram shows the universal set U parallelograms Set A represents parallelograms with four congruent sides while B represents parallelograms with four congr class=