Oh, dude, you're looking for a pentagon. It's like a shape with five sides in 2D, but when you add some depth to it, it becomes a pentagonal prism. So, yeah, pentagon is the name you're after.
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There is no name for a five sided regular polygon. A five sided polyhedron is called a pentahedron.
A five sided 3d shape is called a pentehedron
Triangular Pyramid.
a 4 sided 3d shape is called a triangular prism!!!!!!!!!!!!!!!
A nonahedron
Triskaidecahedron