Changes

In [[Plane_geometry|plane geometry]], the '''perimeter''' of a [[Closed_(topology)|closed]], [[Bounded|bounded]], geometric shape with [[Nonempty|nonempty]] [[Interior|interior]] is equal to the [[Length|length]] of the object's [[Boundary|boundary]]. Thus, familiar geometric shapes such as [[Circle|circles]] and [[Polygon|polygons]] have a perimeter. [[Line_segment|Line segments]] and [[Sierpinski_gasket|Sierpinski gaskets]] do not have a perimeter since they have an empty interior (all the other properties are satisfied).

In [[plane geometry]], the '''perimeter''' of a [[Closed (topology)|closed]], [[bounded]], geometric shape with [[nonempty]] [[interior]] is equal to the [[length]] of the object's [[boundary]]. Thus, familiar geometric shapes such as [[circle]]s and [[polygon]]s have a perimeter. [[Line segment]]s and [[Sierpinski gasket]]s do not have a perimeter since they have an empty interior (all the other properties are satisfied).

The perimeter of a [[polygon]] is the sum of the lengths of its sides.  The perimeter of a circle is called a [[circumference]], and is the circle's [[diameter]] multiplied by [[pi]].

The perimeter of a [[polygon]] is the sum of the lengths of its sides.  The perimeter of a circle is called a [[circumference]], and is the circle's [[diameter]] multiplied by [[pi]].

==See Also==

==See also==

* [[Home security]] - as in Perimeter security

* [[Home security]] - as in Perimeter security

[[Category : Geometry]]

[[Category:Geometry]]

[[Category : Home Security]]

[[Category:Home Security]]

[[Category : Self-defense]]

[[Category:Self-defense]]

[[Category : Survivalism]]

[[Category:Survivalism]]

[[Category : Military Glossary]]

[[Category:Military Glossary]]