What is the definition of a parallelogram?

Parallelogram. A 4-sided flat shape with 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:. read more

Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents. read more

In Euclidean geometry, a parallelogram is a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure. read more

Define parallelogram. parallelogram synonyms, parallelogram pronunciation, parallelogram translation, English dictionary definition of parallelogram. parallelogram n. A four-sided plane figure with opposite sides parallel. n a quadrilateral whose opposite sides are parallel and equal in length. read more