The sum of the angles inside any polygon can be found by spitting the polygon into triangles. Sum of interior angles = 180(n – 2) where n is the number of sides In a regular polygon all the angles are ...

Polygons can be regular or irregular in shape. A polygon is a closed 2D shape with at least three sides. A regular polygon is a polygon with all equal sides and angles. An irregular polygon is a ...

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Assuming that a match is one unit of length, it is possible to place 12 matches on a plane in various ways to form polygons with areas that have integral values. On this page are two such polygons: a ...