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Polygons; Properties of polygons, interior angles of polygons including triangles, quadrilaterals, pentagons, hexagons, heptagons, octagons, nonagons, decagons, 11-gons, dodecagons ... The measure of the central angles of a regular pentagon:
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www.coolmath.com/reference/polygons.html
www.coolmath.com/reference/polygons.html
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Let us now consider the interior angles of regular polygons. We know that the three angles in any triangle must sum to 180°. Since regular triangles have angles of equal measure, each angle of a regular triangle must have 60°. (60+60+60=180)
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library.thinkquest.org/16661/background/regular.polygon...
library.thinkquest.org/16661/background/regular.polygons.html
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A regular polygon is a polygon whose sides are all the same length, and whose angles are all the same. The sum of the angles of a polygon with n sides, where n is 3 or more, is 180° × (n - 2) degrees. ... The following are examples of regular polygons:
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www.mathleague.com/help/geometry/polygons.htm
www.mathleague.com/help/geometry/polygons.htm
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This calculator is designed to give the angles of any regular polygon. Enter the number of sides on the polygon. Then click on Calculate. All angle measurements are in degrees. ... The information calculated is the name of the polygon, the total of the interior angles, the measure of each interior angle, and the measure of...
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www.csgnetwork.com/polygonanglescalc.html
www.csgnetwork.com/polygonanglescalc.html
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For a regular polygon, by definition, all the interior angles are the same. In the figure above, Click on "make regular" then change the number of sides and resize the polygon by dragging any vertex. Notice that for any given number of sides, all the interior angles are the same. ... In Regular Polygons...
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www.mathopenref.com/polygoninteriorangles.html
www.mathopenref.com/polygoninteriorangles.html
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This formula works for irregular polygons (convex or not); but dividing a nonconvex polygon (with some angles greater than 180 degrees) into triangles may not be quite as easy. If the n-gon is regular, then each angle is 180(n-2)/n degrees.
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www.jimloy.com/geometry/pentagon.htm
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Can you work out the internal angles for the common regular polygons? ... The quest of nine ~ Angles in regular polygons ... ; Shape ~ Regular Polygons Angles in Regular Polygon...
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www.learning-connections.co.uk/questof9/thebook/b_shap0...
www.learning-connections.co.uk/questof9/thebook/b_shap01.html
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regular polygons, angles, pentagon: For regular polygons with number of sides n , each angle is =180*(n-2)/n degrees So for pentagon each angle will be =180*(5-2)/5 =180*3/5 =540/5 =108 degrees You can do the calculations on similar lines for n=6,7,8,9,10 and get the required answers.... ... More Geometry Answers;
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en.allexperts.com/q/Geometry-2060/Angles-degree.htm
en.allexperts.com/q/Geometry-2060/Angles-degree.htm
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If all the sides and all the angles of a polygon are equal the polygon is said to be regular. ... Shown here are the first eight regular polygons. Note that the angles and sides of each polygon are of equal measure. ... 1-8 regular polygons...
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www.ul.ie/~cahird/polyhedronmode/regular.htm
www.ul.ie/~cahird/polyhedronmode/regular.htm
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