Summary
Parallelograms

an office building shaped like a parallelogram

A parallelogram is a special type of quadrilateral. In this topic, you explored the properties of the sides and angles of a parallelogram, including opposite sides parallel, opposite sides congruent, opposite angles congruent. You also discovered that the diagonals of a parallelogram bisect each other. These properties are useful both in your mathematics courses and in the real world. Keep an eye out – parallelograms are everywhere.