It is a pentagonal prism
Decagon, if a plane figure or decahedron, if a solid.
10 A decagon is a plane (2-d) figure and so it has only one face. It has 10 sides and 10 vertices.
A prism that has pentagonal cross-section
In general, any 10-sided polyhedron is called a decahedron. With 10 regular triangles for faces, you may have a pentagonal bipyramid.
DECAHEDRONS
Solid 3D figures are called polyhedrons. To figure out what a polyhedron with a specific number of sides is, you take the Greek prefix for the number of sides, and add the suffix "-hedron" at the end: tetra=4, so it would be called a tetrahedron if it has 4 sides. penta=5, so pentahedron. hexa=6, hepta=7, octa=8, ennea=9, deca=10 So your figure would be called a decahedron. I hope this helps ^-^ ~제니치
A 10-sided shape is known as a decagon.(A decahedron is a 3-dimensional solid with 10 polygonal faces.)
A ten faced solid is a decahedron.
A decahedron. Some decahedron shapes are a nonagon-based pyramid, an octagon based prism, or a pentagon based di-pyramid.
pentagonal prism
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A cube has 6 faces. The number of faces, alone, is not sufficient to figure out the number of edges. For example, a cube has 12 edges. A pentagonal pyramid also has 6 faces, but it has 10 edges.
Heptakaidecaherda
It is a pentagonal prism
octagonal prism and decahedron
octagonal prism and decahedron