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The number of square units it takes to completely fill a regular polygon. Four different ways to calculate the area are given, with a formula for each. ... The formulae below give the area of a regular polygon. Use the one that matches what you are given to start. They assume you know how ... Apothem of a regular polygon...
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www.mathopenref.com/polygonregulararea.html
www.mathopenref.com/polygonregulararea.html
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A "Regular Polygon" has: ... The internal angle of a regular polygon with "n" sides can be calculated using: ... The radius of the incircle is the apothem of the polygon...
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www.mathsisfun.com/geometry/regular-polygons.html
www.mathsisfun.com/geometry/regular-polygons.html
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Apothem - Wikipedia, the free encyclopedia
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The apothem of a regular polygon is a line segment from the center to the midpoint of one of its sides. Equivalently, it is the line drawn from the center of the polygon that is perpendicular to one...
en.wikipedia.org/wiki/Apothem
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An apothem of a regular polygon is a segment with one endpoint at the center and the other endpoint at the midpoint of one of the sides. The apothem of a regular polygon is the perpendicular bisector of whichever side on which it has its endpoint.
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www.sparknotes.com/math/geometry2/measurements/section6...
www.sparknotes.com/math/geometry2/measurements/section6.rhtml
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Theorem 5-12: An apothem of a regular polygon bisects the central angle (determined by the side) to which it's drawn. ... Theorem 5-13: An apothem of a regular polygon is a perpendicular bisector to the side it's drawn to...
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www.dummies.com/how-to/content/sizing-up-the-area-of-a-...
www.dummies.com/how-to/content/sizing-up-the-area-of-a-polygon.html
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A regular polygon is a polygon such that all of its sides are congruent and all of its interior angles are congruent; that is, ... Given a regular polygon with apothem of length $a$ and perimeter $P$ , its area is $$ A=\frac{1}{2}aP. $$ A proof of this statement is supplied in the entry area of regular polygon.
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planetmath.org/encyclopedia/Center9.html
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Apothem of regular polygon A segment is an apothem of a regular polygon if and only if it is a radius of a circle inscribed in the polygon.
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www.bga.com/~kirby/apothem.regular.polygon.html
www.bga.com/~kirby/apothem.regular.polygon.html
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An interactive applet and associated web page that demonstrate the apothem of a regular polygon. The applet shows a regular polygon where the user can alter the number of sides and resize it by dragging any vertex.
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mathforum.org/mathtools/tool/28413/
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To read about regular polygons, visit The Geometry Center. ... Special Cases of the Regular Polygon ... 3. Construction of a 17-sided regular polygon...
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mathforum.org/dr.math/faq/formulas/faq.regpoly.html
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