Icosahedron
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Tetrahedron, Hexahedron(cube), Octahedron, Dodecahedron, and Icosahedron
20 cubed = 20 x 20 x 20 = 8000
Sum of interior angles of n-sided polygon = 180n - 360 degrees. When n = 20 this gives 3240o
A 150-sided shape is called a hecatontagon. The prefix "hecta-" is derived from the Greek word for one hundred, and "-gon" is a suffix used for shapes with a specific number of sides. Therefore, a 150-sided polygon is specifically referred to as a hecatontagon.
hendecagon