Definition of

Parallelogram

Parallelogram

A flat shape with 4 straight sides where opposite sides are parallel.

Also:
• opposite sides are equal in length, and
• opposite angles are equal (angles "A" are the same, and angles "B" are the same)

NOTE: squares, rectangles and rhombuses are all parallelograms!

Try moving any point below:

../geometry/images/geom-quad.js?mode=parallelogram