Difference between revisions of "Trapezoid"
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The following properties arise from the definition: | The following properties arise from the definition: | ||
* Two of the pairs of adjacent angles sum to 180<sup>o</sup> | * 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 | + | * The area of the trapezium is the average of the parallel sides multiplied by the distance between them. |
[[Category:Geometry]] | [[Category:Geometry]] |
Revision as of 22:48, May 14, 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 180o
- The area of the trapezium is the average of the parallel sides multiplied by the distance between them.