No.
a square * * * * * That would be a square pyramid! A triangular pyramid would have ... wait for it ... a TRIANGULAR base! Worth waiting for, wasn't it?
A square pyramid.
Pyramids are classified by the shape of their base. A triangular pyramid has a triangular base and three triangular side faces. A square pyramid has a square base and four triangular sides. A pentagonal pyramid has a pentagonal base and five triangular sides. A hexagonalpyramid has a hexagonal base and six triangular sides, and so on.
A shape with a square base and four triangular sides is a pyramid.
A square-based pyramid
It is a square pyramid.
Neither a triangular nor a rectangular pyramid has a square base. A square pyramid has a square base.
A square pyramid has a square base and four sides. A triangular pyramid has a triangular base and three sides.
a triangular pyramid
the base of a triangular pyramid is triangle
the base of a triangular pyramid is triangle
A pyramid (3D)! Some examples: - triangular base pyramid - square base pyramid - rectangular base pyramid - cone