Parallelogram

Parallelogram

A Parallelogram (pronunciation: /ˌparəˈlɛləɡram/) 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.

Etymology

The word "parallelogram" is derived from the Greek παραλληλ-όγραμμον (parallelogrammon), a compound of παράλληλος (parallēlos, "parallel") and γραμμή (grammē, "line").

Related Terms

• Quadrilateral: A polygon with four edges (or sides) and four vertices or corners.
• Rectangle: A parallelogram with four right angles.
• Rhombus: A parallelogram with all sides of the same length.
• Square: A parallelogram with four sides of the same length and four right angles.
• Trapezoid: A quadrilateral with at least one pair of parallel sides.

See Also

• Polygon
• Geometry
• Mathematics

External links

• Medical encyclopedia article on Parallelogram
• Wikipedia's article - Parallelogram

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