Because it's shaped like a pentagon. A pentagon is a five-sized shape.
Pentagon (and in 3d: triangular prism and tetrahedron.)
hexagon
The regular dodecahedron is the 3-dimensional analog of a regular pentagon. In other words, it is a three-dimensional pentagon.
The pentagon.
5 is pentagon. 6 is pentagon. 8 is octagon
A 3D name for a pentagon is a pentagonal prism.
a pentagon a pentagon
pentagon a pentagon A pentagon is a Polygon with 5 sides.
A pentagon is a 5 sided polygon
It is a Pentagon.
the pentagon got its name from the root penta meaning 5 or 5 sides.
There is no such thing as a nine sided pentagon. A pentagon has 5 sides; no more, no less.
The United States Pentagon Shop of Gifts
A regular pentagon
Pentagon (and in 3d: triangular prism and tetrahedron.)
A five sided shape is called a pentagon.
Pentagon.