A pyramid with a square base, or a triangular prism.
A solid with triangular sides is a "pyramid". (The pyramids in Egypt have four sides and a square base.)
it's a pyramid with 5 sides.
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 Square Pyramid.
A pyramid with a triangular base. The faces are 4 equilateral triangles.
a pentagonal pyramid it has five triangular sides that all meet at a point at the top. the base is a pentagon
A square pyramid has a square base and four triangular sides.
A triangular prism (a pentahedron) has 3 sides on its base, 3 base vertices, and three top vertices.
A square pyramid has a square base and four sides. A triangular pyramid has a triangular base and three sides.
The base of a pyramid only has four sides, as it is a square. That is so not true. A tetrahedron is a pyramid with a triangular base. A pyramid can have any polygon as its base.
A square pyramid has a base with 4 equal sides and triangular faces.