Difference between revisions of "Perimeter"
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| − | + | 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). | |
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| + | 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]]. | ||
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| + | ==See also== | ||
| + | * [[Home security]] - as in Perimeter security | ||
[[Category:Geometry]] | [[Category:Geometry]] | ||
| + | [[Category:Home Security]] | ||
| + | [[Category:Self-Defense]] | ||
| + | [[Category:Survivalism]] | ||
| + | [[Category:Military Glossary]] | ||
Latest revision as of 04:35, June 19, 2018
In plane geometry, the perimeter of a closed, bounded, geometric shape with nonempty interior is equal to the length of the object's boundary. Thus, familiar geometric shapes such as circles and polygons have a perimeter. Line segments and Sierpinski gaskets 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.
See also
- Home security - as in Perimeter security