What is the smallest possible number of faces of a closed convex polyhedron?
A2 faces
B4 faces
C3 faces
D5 faces
Answer & Solution
Correct answer: B. 4 faces
Four triangular faces enclose a tetrahedron; fewer flat polygonal faces cannot enclose a three-dimensional solid.
Keep practising Visualising Solid Shapes
Browse all Visualising Solid Shapes questions for ICSE Class 8, or explore more Mathematics topics.
Related questions
Match each non-polyhedron 3D solid with its curved surface feature:Match each 3D view projection with its architectural perspective:Match each 3D polyhedron with its Euler characteristics (F, V, E):Match Euler's formula components for polyhedra (F + V - E = 2):Which condition makes a rectangular cuboid a regular polyhedron?Right prism, scalene triangular base: its lateral faces are...A cube's corner cut meets only its 3 incident edges. Changes (faces, vertices, edges)?Two regular tetrahedra join at a face, apices opposite. Outer (faces, vertices, edges)?