Question

What is a regular polyhedron? A cube is a regular polyhedron but cuboid is not a regular polyhedron. Why? [4 MARKS]

Answer 1

Definition : 2 Marks
Reason : 2 Marks

A polyhedron is said to be a regular polyhedron if its faces are made up of regular polygons of same kind and the same number of faces meet at each vertex.

A cube is a regular polyhedron since it is made of 6 squares which are congruent, but a cuboid is not a regular polyhedron since its faces are not congruent rectangles.