home.btconnect.com/shapemakingclub/twodimensionalshapes.htmlUse this link. It will teach you more than just a 20 sided polygon.
icosagon
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.
there are 12 black and 20 white pentagons. the shape is a pentagon and there are 32 shapes on a soccer ball.
A 20-sided polyhedron is an icosahedron. A 20-sided polygon is an icosagon.
home.btconnect.com/shapemakingclub/twodimensionalshapes.htmlUse this link. It will teach you more than just a 20 sided polygon.
they are: ---sided pyramids and triangular prisms and 20 sided 3d shapes
Shapes with 13 to 20 sides are known as polygons. Specifically, a 13-sided polygon is called a tridecagon, a 14-sided polygon is called a tetrakaidecagon, a 15-sided polygon is called a pentadecagon, a 16-sided polygon is called a hexadecagon, a 17-sided polygon is called a heptadecagon, an 18-sided polygon is called an octadecagon, a 19-sided polygon is called an enneadecagon, and a 20-sided polygon is called an icosagon.
N-gon is the name of 13-20 sided polygon.
icosagon
Duodecagon <--wrong... a duodecagon is a 12-sided polygon. icosagon is a 20 sided polygon.
I suggest you forget about memorizing fancy names - which really serve no useful purpose - and just call them "20-sided polygon", "21-sided polygon", etc.
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.
20
Dodecahedron. <-- wrong a dodecahedron is a 3 dimensional shape having 12 faces. a 20-sided polygon is an icosagon
there are 12 black and 20 white pentagons. the shape is a pentagon and there are 32 shapes on a soccer ball.
A 20-sided polyhedron is called an icosahedron. It has 20 equilateral triangle faces, 30 edges, and 12 vertices. It is a regular convex polyhedron with rotational symmetry.