Are parallelograms and squares also trapezoids?

1 Answer | Add Yours

pacorz's profile pic

pacorz | High School Teacher | (Level 3) Educator

Posted on

You have asked a good question that doesn't really have a straight answer. There are actually two accepted definitions of what a trapezoid is. If you use the definition known as the exclusive definition, then parallelograms and squares are not trapezoids. This is because the exclusive definition says that a trapezoid has exactly two parallel sides; since squares and parallelograms have two pairs of parallel sides, they do not qualify as trapezoids under this definition.

The inclusive definition says that a parallelogram has at least two parallel sides; in this case, squares and parallelograms are included in the group.

If you need to answer this question for a class, I would suggest you ask your instructor which definition he or she wants students to use.


We’ve answered 317,520 questions. We can answer yours, too.

Ask a question