A 2D seven sided figure is called a heptagon. A 3D seven faced polygon is called a heptahedron.
Heptrahedron
heptahedron
A hexagon based pyramid.
A hexagon based pyramid.
A 2D seven sided figure is called a heptagon. A 3D seven faced polygon is called a heptahedron.
Heptrahedron
A Pyramid is a 7 lettered 3D shape with triangular faces.
A seven-sided shape (polygon) is called a heptagon.
a McNeilapon
heptahedron
heptahedron
a square
There are many possibilities, and here are a couple: A dodecagonal prism (dodecagon = 12 sided plane figure); A heptagonal pyramid (heptagon = 7 sided plane figure).
well if you take octagon (8 sides) , in 3d shapes octagon is probably called octagonal prism. and the sides are actually called faces. AND a 7 sided shape , a heptagon, is called heptagonal prism
Pryimaid
It cannot be a simply connected 3d shape because it does not satisfy the Euler characteristic.