Difference between revisions of "Parallelogram"
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− | A parallelogram is a | + | A '''parallelogram''' is a [[quadrilateral]] in which both pairs of opposite sides are parallel. Its properties include: |
− | * Opposite sides parallel | + | * Opposite sides are [[parallel]]. |
− | * Opposite sides congruent | + | * Opposite sides are [[congruent (geometry) | congruent]]. |
− | * Opposite | + | * Opposite [[angle]]s are congruent. |
− | * Consecutive angles supplementary | + | * Consecutive angles are [[supplementary]]. |
− | * | + | * [[Diagonal]]s [[bisect]] each other. |
− | * | + | * Each diagonal divides the figure into 2 congruent [[triangle]]s. |
+ | |||
+ | * Both diagonals together divide the figure into 2 pairs of congruent triangles. All 4 triangles have equal area. | ||
== Common Parallelograms == | == Common Parallelograms == | ||
− | * [[ | + | * [[Rectangle]] |
− | * [[ | + | * [[Square (geometry) | Square]] |
− | * [[ | + | * [[Rhombus]] |
+ | [[Category:Geometry]] |
Latest revision as of 18:34, 19 October 2007
A parallelogram is a quadrilateral in which both pairs of opposite sides are parallel. Its properties include:
- Opposite sides are parallel.
- Opposite sides are congruent.
- Opposite angles are congruent.
- Consecutive angles are supplementary.
- Each diagonal divides the figure into 2 congruent triangles.
- Both diagonals together divide the figure into 2 pairs of congruent triangles. All 4 triangles have equal area.