Difference between revisions of "Trapezoid"

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A '''trapezoid''' (british: trapezium) is a four-sided [[polygon]] with two [[parallel]] sides.
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A '''trapezoid''' (British: [[trapezium]]) is a four-sided [[polygon]] with two [[parallel]] sides.
  
 
[[Image:trapezoid.gif]]
 
[[Image:trapezoid.gif]]
  
  
Note: in british usage, the word 'trapezoid' refers to what in american usage is called [[Trapezium|trapezium]].
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The following properties arise from the definition:
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* Two of the pairs of adjacent angles sum to 180<sup>o</sup>
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* 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.

Trapezoid.gif


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 multipleied by the distance between them.