Question

A polyhedron whose base is a polygon and lateral faces are triangles.
a) Pyramid
b) Prism
c) Cube
d) Cylinder​

Answer 1

Hyy dear

The answer is pyramid

May this helps you

Answer 2

Pyramid is a polyhedron whose base is a polygon and lateral faces are triangles.

To properly understand this answer, we have to know more about polyhedron.

Polyhedron :

• "A polyhedron can be defined as the three dimensional shape which has flat polygonal faces."
• Example : cube, tetrahedron etc.

Now, a pyramid is also considered to be a polyhedron. In case of any pyramid the base is a polygon and the lateral faces are triangles. And, this condition of having polygonal faces and triangular lateral faces, is only fulfilled by pyramid (as a polyhedron).

On the other hand, prism has polygonal bases but rectangular lateral faces. Cube has only square faces. Cylinder has circular base and curved lateral surface. So, none of these shapes fulfill the given criteria.

Hence, the correct answer to this question is pyramid.