Parallelogram

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Parallelogram.svg

A parallelogram is a polygon with four sides (a quadrilateral). It has two pairs of parallel sides (sides which never meet) and four edges. The opposite sides of a parallelogram have the same length (they are equally long). The word "parallelogram" comes from the Greek word "parallelogrammon" (bounded by parallel lines).[1] Rectangles, rhombuses, and squares are all parallelograms.

As shown in the picture on the right, because triangles ABE and CDE are congruent (have the same shape and size),

AE = CE
BE = DE.

In all Parallelogram's opposite angles are equal to each other. Angles which are not opposite in the Parallelogram will add up to 180 degrees.

Properties[change | change source]

  1. Opposite sides of parallelogram are parallel.
  2. Any line through the midpoint of a parallelogram bisects the area.
  3. Parallelogram is a quadrilateral.

References[change | change source]

Other websites[change | change source]