Difference between revisions of "Octagon"
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(New page: An eight-sided polygon. Image:octagon.gif) |
(area, cat) |
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| − | + | [[Image:octagon.gif|thumb|A regular octagon]] | |
| − | [[ | + | An '''octagon''' is an eight-sided [[polygon]]. |
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| + | The area of a [[Regular polygon|regular]] octagon with side = a is given by: | ||
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| + | <math>2(1 + \sqrt{2})a^2</math> | ||
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| + | [[Category:Geometry]] | ||
