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Polygon- closed figure with straight sidesRegular Polygon- all sides equalCircle- A round plane figure whose points are equidistant from a fixed center.Triangle- a polygon with 3 sides Quadrilateral- a polygon with 4 sidesRectangle- a quadrilateral with opposite sides equal and parallel 4 right anglesSquare-a quadrilateral with all sides equal and opposite sides parallel 4 right anglesRhombus- a quadrilateral with opposite sides equal and parallel Parallelogram-a quadrilateral with opposites sides parallelPentagon- a polygon with 5 sidesHexagon- a polygon with 6 sidesOctagon- a polygon with 8 sidesNonagon- a polygon with 9 sidesDecagon- a polygon with 10 sides 2D Shapes