Changes

A rectangle is a [[polygon]] of four sides where every angle is a right angle (90°)<ref>There are many definitions of ''rectangle'', but it seems sensible to use one which is based on [[angle]] properties rather than length or parallelism properties. Definition adapted from http://www.mathsisfun.com/definitions/rectangle.html </ref>.

A '''rectangle''' is a [[polygon]] of four sides where every angle is a right angle (90°).<ref>There are many definitions of ''rectangle'', but it seems sensible to use one which is based on [[angle]] properties rather than length or parallelism properties. Definition adapted from http://www.mathsisfun.com/definitions/rectangle.html</ref>

[[Image:Rectangle.gif]]

[[Image:Rectangle.gif]]

As a result of this definition:

As a result of this definition:

* Area = product of any two adjacent sides

* Area = product of any two adjacent sides

Please note that the adjacent sides do not need to be of equal length. The special case where all four sides of a rectangle are equal is called a [[square]], which is also a [[rhombus]] and a [[kite]].

Please note that the adjacent sides may or may not be of equal length. The special case where all four sides of a rectangle are equal is called a [[square]], which is also a [[rhombus]] and a [[kite]].

 

==Notes==

===Notes===

<references/>

<references/>

 

[[Category:Plane Geometry]]

[[category:geometry]]