isosagon
* * * * *
icosagon.
Chat with our AI personalities
A 20-sided flat figure (polygon) is called an icosagon. If it is a solid figure--three-dimensional--it is an icosahedron.
A seven sided figure is called a heptagon.
A four sided figure is called a quadrilateral.
A 12-sided figure is called a dodecagon.
A six sided figure is called a hexagon.