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Definition
| a simple closed plane curve made only with straight line segments in which all the sides are of equal measure, and all the angles are of equal measure. In other words, the polygon is equilateral and equiangular |
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Definition
| a circle which completely encolses a polygon and touches the polygon at all of its corners. In other words, the circle contains all of the corners of the polygon. |
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Definition
| a circle which is completely enclosed by a polygon and barely touches all of the sides of the polygon |
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Definition
| a polygon which completely encloses a circle, with all of its sides just touching the circle. This is equivalent to the polygon having an inscribed circle. |
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Definition
| a polygon which is completely encolsed by a circle and touches the circle with all of its corners. This is equivalent to the polygon having a circumscribed circle. |
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| center of a regular polygon |
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Definition
| the distance from the center of the polygon to any one of the corners of the polygon. This is the same as the radius of the circumscribed circle for that polygon. |
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| radius of a regular polygon |
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Definition
| the distance from the center of the polygon to any one of the corners of the polygon. This is the same as the radius of the circumscribed circle for that polygon. |
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| apothem of a regular polygon |
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Definition
| the shortest distance from the center of the polygon to any one of the sides of the polygon. This is the same as the radius of the inscribed circle for that polygon. |
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| perimeter of a regular polygon |
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Definition
P = n times s
n equals number of sides
s equals length of a side |
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Term
| area of a regular polygon |
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Definition
A= (1/2)asn
a=apothem
n= number of sides
s= length of sides
can also be writen A=(1/2)aP |
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