Difference between revisions of "Quadrilateral"
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| − | A '''quadrilateral''' is a four-sided [[polygon]]. Some | + | A '''quadrilateral''' is a four-sided [[polygon]]. Some special quadrilaterals include [[square (geometry) | square]]s, [[rectangle]]s, [[rhombus|rhombi]], [[parallelogram]]s, [[trapezoid]]s, [[kite]]s, and [[cyclic quadrilateral]]s. |
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== Introductory topics == | == Introductory topics == | ||
| − | * [[Cyclic quadrilateral | + | * [[Cyclic quadrilateral]]s |
=== Resources === | === Resources === | ||
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== Intermediate topics == | == Intermediate topics == | ||
* [[Ptolemy's Theorem]] | * [[Ptolemy's Theorem]] | ||
| + | * [[Brahmagupta's formula]] | ||
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=== Resources === | === Resources === | ||
==== Books ==== | ==== Books ==== | ||
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[[Category:Geometry]] | [[Category:Geometry]] | ||
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[[Category:Definition]] | [[Category:Definition]] | ||
Revision as of 20:55, 22 October 2007
A quadrilateral is a four-sided polygon. Some special quadrilaterals include squares, rectangles, rhombi, parallelograms, trapezoids, kites, and cyclic quadrilaterals.
Contents
Introductory topics
Resources
Books
Intermediate topics
Resources
Books
- Challenging Problems in Geometry -- A good book for students who already have a solid handle on elementary geometry.
- Geometry Revisited -- A classic.
