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Learn about the basics of polygons, including their definition, types, naming conventions, interior angles in quadrilaterals, and the sum of interior and exterior angles in regular polygons.
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What is a polygon? A polygon is a 2-D shape made when line segments enclose a region. The corners are called vertices. One is a vertex. A B The line segments are called sides. E C D 2-D stands for two-dimensional.These two dimensions are length and width. A polygon has no thickness.