Question

question 7 of 10
which of the following does not have triangular faces?
a. tetrahedron
b. hexahedron
c. icosahedron
d. octahedron

Explanation:

• A tetrahedron has 4 triangular faces.
• A regular hexahedron (cube) has 6 square faces, no triangular faces; even non-regular hexahedrons do not require triangular faces, unlike the other options which are Platonic solids with all triangular faces.
• An icosahedron has 20 triangular faces.
• An octahedron has 8 triangular faces.

Answer:

B. Hexahedron