A 10-sided figure is called a decagon. In geometry, a decagon is defined as a polygon consisting of 10 connecting line segments that connect at 10 vertices. A regular decagon has sides with equal lengths and equal angle ... More »

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A 12-sided polygon is called a dodecagon. A polygon is any closed figure with 3 or more sides and angles. Every polygon with 3 to 20 sides has a name. Polygons with 30, 40, 50, 60, 70, 80, 90, and 100 sides have specific... More »

www.reference.com Math Geometry Shapes

A 6-sided polygon is called a hexagon. A polygon is any closed figure with 3 or more sides and angles. Every polygon from 3 to 20 has a name. Polygons with 30, 40, 50, 60, 70, 80, 90 and 100 sides have names, as well. More »

A decagon is a ten-sided, closed-plane figure with eight triangles in it. These eight triangles are formed by joining any vertex of the decagon to any other vertex. Thus, the triangles are formed by drawing the diagonals... More »

A regular decagon has 10 lines of symmetry, one line drawn through each vertex and one line drawn through the midpoint of each edge. A line of symmetry indicates where a polygon can be folded in half to form two equal sh... More »

A polygon with 10 sides is called a decagon. The word comes from the Greek words for "ten" ("deka") and for "angle" or "corner" ("gonia"). Decagons have 10 angles and 10 sides. More »

A flat 10-sided shape with sides of equal length is called a decagon. A solid 10-sided shape with faces of equal size and shape is called a decahedron. More »