a tetrahedron
a tetrahedron
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YesA triangular pyramid is a pyramid having a triangular base. The tetrahedron is a triangular pyramid having congruent equilateral triangles for each of its faces.
triangular pyramidAnswer:a pyramid with a triangular base is a tetrahedron
A triangular pyramid has a triangular base and three triangular faces meeting at its apex. A square pyramid has a square base and four triangular faces meeting at its apex.
A triangular pyramid is usually called a tetrahedron; its base is an equilateral triangle, as are the other three of its sides. An Egyptian pyramid has a square base; the other four sides are isosceles triangles.
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.