Question

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

• A. An equilateral triangle
• B. A square with same side length as of triangle
• C. 2 equilateral triangles with side length same as triangle
• D. 2 squares with side length same as triangle

Answer 1

The correct option is B A square with same side length as of triangle

A pyramid is a solid which has one flat surface as its base and triangular faces that meet at the apex whose number is given by the number of edges in its base. A square with same side length as of triangle will help us construct a pyramid. Any other base will make the triangles not meet at the apex.