Icosagon
If it is 3 dimensional it is an icosahedron If it is 2 dimensional it is an icosagon
Icosahedron.
Any of these shapes is practically circular. A 20-sided shape is an icosagon. a 50-sided shape is a pentacontagon (aka pentecontagon). A 100-sided shape is a hectogon (aka hecatontagon). A 1000-sided shape is a chiliagon.
A 20-sided flat figure (polygon) is called an icosagon. If it is a solid figure--three-dimensional--it is an icosahedron.
Shapes with 12 to 20 sides are named as follows: a 12-sided shape is called a dodecagon, a 13-sided shape is a triskaidecagon, a 14-sided shape is a tetradecagon, a 15-sided shape is a pentadecagon, a 16-sided shape is a hexadecagon, a 17-sided shape is a heptadecagon, an 18-sided shape is an octadecagon, a 19-sided shape is a nonadecagon, and a 20-sided shape is an icosagon.
the name of a 20 sided 3d shape is called a icosahedron
An icosagon is the name of the 20 sided polygon.
Dodecahedron. <-- wrong a dodecahedron is a 3 dimensional shape having 12 faces. a 20-sided polygon is an icosagon
If it is 3 dimensional it is an icosahedron If it is 2 dimensional it is an icosagon
Icosahedron.
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Two dimensional: IcosagonThree dimensional: IcosahedronFor more information, see Related links below
Any of these shapes is practically circular. A 20-sided shape is an icosagon. a 50-sided shape is a pentacontagon (aka pentecontagon). A 100-sided shape is a hectogon (aka hecatontagon). A 1000-sided shape is a chiliagon.
A 20-sided flat figure (polygon) is called an icosagon. If it is a solid figure--three-dimensional--it is an icosahedron.
A 5 sided shape is a pentagon. Its perimeter has no relevance.
icosahedron
A 20-sided polyhedron is an icosahedron. A 20-sided polygon is an icosagon.