Answer the following questions.

(a) Name the polyhedron which has four vertices, four faces?

(b) Name the solid object which has no vertex?

(c) Name the polyhedron which has 12 edges?

(d) Name the solid object which has one surface?

(e) How is a cube different from cuboid?

(f) Which two shapes have the same number of edges, vertices, and faces?

(g) Name the polyhedron which has 5 vertices and 5 faces?

(a) A polyhedron with 4 vertices and 4 faces is tetrahedron.

(b) The only Solid object with no vertex is Sphere.

(c) The possible polyhedrons with 12 edges are a cube, cuboid, Hexagonal Pyramid.

(d) The Only solid object with 1 face is Sphere.

(e) Cube is a Regular Polyhedron (All faces are identical)

Whereas Cuboid is not a Regular Polyhedron (All faces are not identical)

(f) Cube and Cuboid have a same number of faces, edges, vertices.

That is 6 faces, 12 edges, 8 vertices.

(g) A Polyhedron with 5 vertices and 5 faces is square Pyramid.