The diagram shows the universal set U = {parallelograms}. Set A represents parallelograms with four congruent angles . How many of the parallelograms fall into the category A u B?

26 is the number of the parallelograms that fall into the category A U B. In this universal set, you must likely to find 26 parallelograms that fall into the category A U B. With 4 congruent sides and four congruent angles in set A and B we can see 26 parallelograms that fall into the category A U B.