It is a face of the 3-d figure.
An octagon is a 2 dimensional shaped 8 sided polygon
A solid figure shaped like an orange is a sphere. Spheres are perfectly round three-dimensional objects where every point on the surface is equidistant from the center. This geometric shape is characterized by its smooth surface and lacks any edges or vertices, similar to the natural roundness of an orange.
Books, boxes, notebooks, and basically every three-dimensional figure with rectangular sides.
An egg-shaped, three-dimensional shape is an ovoid.
A seven sided polygon
An ellipsoid is a three-dimensional egg-shaped figure.
my deck
An octagon is a 2 dimensional shaped 8 sided polygon
probably a sphere
A seven sided polygon in called a heptagon.
There are many but I guess that the answer that you are looking for is a pyramid.
If it's three dimensional, a 12 sided figure is a dodecahedron.
It is a polygonal pyramid.
a polyhedron
Yes. A lot like a sphere actually, but a big one.
Books, boxes, notebooks, and basically every three-dimensional figure with rectangular sides.
An egg-shaped, three-dimensional shape is an ovoid.