Question

Are sphere, cone and cylinder polyhedrons? Give reason for your answer [4 MARKS]

Answer 1

Answer : 1 Mark
Reasons : 1 Mark each

Sphere, cone and cylinder are not polyhedrons as they are not made of polygons.

Sphere : Sphere has only one curved face, no polygons as faces. So it is not a polyhedron

Cone : Cone has one circular face, but remaining is a curved surface.So it is not a polyhedron

Cylinder : Cylinder has two circular faces, but remaining is a curved surface.So it is not a polyhedron