Question

We have 4 congruent equilateral triangles. What do we need more to make a pyramid?

Options

• An equilateral triangle.

• A square with same side length as of triangle.

• 2 equilateral triangles with side length same as triangle.

• 2 squares with side length same as triangle.

Answer 1

A square with same side length as of triangle.

Explanation:

We know that, a pyramid is a polyhedron, whose base is a polygon and lateral faces are triangles. But in the question, we have only 4 congruent equilateral triangles. Thus, we have to add a polygon in the base of atleast a four-sided figure.