If you mean a 3D version of a 5 sided 2D shape (a pentagon), then it would be a Pentagonal Prism
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Actually, if all its faces are pentagonal, it would be a dodecahedron.
Pentehedron
A 3D 5 sided shape is called a dodecahedron. It is a solid with 20 vertices, 30 edges and 12 equal pentagonal triangular faces.
A five sided geometric shape is called a pentagon.
Pentagon
a 5-sided shape is called a pentagon.
A pyramid
5 sided shape = pentagon ._ /. \ \_/
It has 5 corners if it is a 3D shape like a piramid but if it is 2D it is 3
A Pentagon. A five sided figure is a pentagon
A five-sided geometric shape is a pentagon.
A 5 sided shape is a pentagon.
A pentagon is a 5 sided shape.