A geometric figure with a polygonal base and triangular sides is called a pyramid.
The regular solid, with 20 identical equilateral triangular faces, is called an icosahedron.
A rectangular prism.
a geometric figure having a specified kind or number of faces.
A cube
A solid figure with twenty faces is called an Icosahedron.
A geometric figure with a polygonal base and triangular sides is called a pyramid.
The regular solid, with 20 identical equilateral triangular faces, is called an icosahedron.
A rectangular prism.
Not any geometric figure.
Such at figure - as described - could not be made as a solid geometric shape.
a geometric figure having a specified kind or number of faces.
A rectangular prism, pentagonal pyramid
A tetrahedron.
The geometric figure of a kite has 1 face.
A tetrahedron.
There are no regular geometric figures with 9 edges and 10 faces.. I'm not even entirely sure there is an irregular geometric figure that would allow for such a combination- edge count and face count are usually identical... Maybe if you were describing some sort of conic section but I can't figure out what that might look like.