Difference between revisions of "Quadrilateral"

m (added content)
Line 1: Line 1:
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.  
+
==Definition==
 +
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.
 +
 
 +
==Types of quadrilaterals==
 +
===Kite===
 +
{{main|Kite}}
 +
A kite is a quadrilateral with two pairs of adjacent [[congruent]] [[edge]]s.
 +
===Cyclic Quadrilateral===
 +
{{main|Cyclic quadrilateral}}
 +
A cyclic quadrilateral is a [[quadrilateral]] that is [[cyclic]].
 +
===Parallelogram===
 +
{{main|Parallelogram}}
 +
A parallelogram is a quadrilateral with two pairs of [[parallel]] [[edge]]s.
 +
===Rhombus===
 +
{{main|Rhombus}
 +
A rhombus is an [[equilateral]] parallelogram.
 +
===Rectangle===
 +
{{main|Rectangle}}
 +
A rectangle is an [[equiangular]] parallelogram.
 +
==Square==
 +
{{main|Square (geometry)}}
 +
A square is any [[figure]] that is both a rectangle and a rhombus.
  
 
== Introductory topics ==
 
== Introductory topics ==
Line 16: Line 37:
 
* [http://www.amazon.com/exec/obidos/ASIN/0486691543/artofproblems-20 Challenging Problems in Geometry] -- A good book for students who already have a solid handle on elementary geometry.
 
* [http://www.amazon.com/exec/obidos/ASIN/0486691543/artofproblems-20 Challenging Problems in Geometry] -- A good book for students who already have a solid handle on elementary geometry.
 
* [http://www.amazon.com/exec/obidos/ASIN/0883856190/artofproblems-20 Geometry Revisited] -- A classic.
 
* [http://www.amazon.com/exec/obidos/ASIN/0883856190/artofproblems-20 Geometry Revisited] -- A classic.
 
+
{{stub}}
 
[[Category:Definition]]
 
[[Category:Definition]]
 
[[Category:Geometry]]
 
[[Category:Geometry]]

Revision as of 19:18, 6 October 2024

Definition

A quadrilateral is a four-sided polygon. Some special quadrilaterals include squares, rectangles, rhombi, parallelograms, trapezoids, kites, and cyclic quadrilaterals.

Types of quadrilaterals

Kite

Main article: Kite

A kite is a quadrilateral with two pairs of adjacent congruent edges.

Cyclic Quadrilateral

Main article: Cyclic quadrilateral

A cyclic quadrilateral is a quadrilateral that is cyclic.

Parallelogram

Main article: Parallelogram

A parallelogram is a quadrilateral with two pairs of parallel edges.

Rhombus

{{main|Rhombus} A rhombus is an equilateral parallelogram.

Rectangle

Main article: Rectangle

A rectangle is an equiangular parallelogram.

Square

Main article: Square (geometry)

A square is any figure that is both a rectangle and a rhombus.

Introductory topics

Resources

Books

Intermediate topics

Resources

Books

This article is a stub. Help us out by expanding it.