# Difference between revisions of "Trapezoid"

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− | A '''trapezoid''' ( | + | A '''trapezoid''' (British: [[trapezium]]) is a four-sided [[polygon]] with two [[parallel]] sides. |

[[Image:trapezoid.gif]] | [[Image:trapezoid.gif]] | ||

− | + | The following properties arise from the definition: | |

+ | * Two of the pairs of adjacent angles sum to 180<sup>o</sup> | ||

+ | * The area of the trapezium is the average of the parallel sides multipleied by the distance between them. | ||

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+ | |||

+ | |||

[[Category:Geometry]] | [[Category:Geometry]] |

## Revision as of 12:48, 14 May 2007

A **trapezoid** (British: trapezium) is a four-sided polygon with two parallel sides.

The following properties arise from the definition:

- Two of the pairs of adjacent angles sum to 180
^{o} - The area of the trapezium is the average of the parallel sides multipleied by the distance between them.