If it's a flat figure (2 dimensional), it's a heptagon.If it's a solid object (3 dimensional), it's a heptahedron.Hepta is the Greek for seven
The solid commonly called a dodecahedron is not a solid pyramid but the name simply means a solid shape with 12 faces and so, a pyramid on a 11-sided polygonal base will be a dodecahedron.
A 5-sided 2-dimensional figure is a pentagon and a 5-sided 3-dimensional shape is a pentahedron.
A hexahedron is a solid with six plane faces, and a cuboid is a six-sided figure each face of which is a rectangle.
A hexagon is a 6-sided plane shape (polygon). A hexahedron is a 6 -sided solid shape.
There cannot be a solid three sided figure. A solid 4 sided object is a tetrahedron.
octohedron
A twelve sided polygon is called a dodecahedron. No, that is a twelve faced solid (3-D) object. A 12 sided polygon is a dodecagon.
It is a 3 sided poylgon
If it's a flat figure (2 dimensional), it's a heptagon.If it's a solid object (3 dimensional), it's a heptahedron.Hepta is the Greek for seven
um. a triangle...?
A 3 sided polygon
The solid commonly called a dodecahedron is not a solid pyramid but the name simply means a solid shape with 12 faces and so, a pyramid on a 11-sided polygonal base will be a dodecahedron.
The solid commonly called a dodecahedron is not a solid pyramid but the name simply means a solid shape with 12 faces and so, a pyramid on a 11-sided polygonal base will be a dodecahedron.
A four-sided solid is called a tetrahedron.
A 5-sided 2-dimensional figure is a pentagon and a 5-sided 3-dimensional shape is a pentahedron.
A many sided planar figure is a polygon. A many sided solid is a polyhedron.