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.
Triangular based pyramid
A geometric figure with a polygonal base and triangular sides is called a pyramid.
A triangular pyramid is a pyramid with a triangular base; all pyramids are by definition three-dimensional figures, so a triangular pyramid is indeed 3D.
# Square Pyramid # Rectangular Pyramid # Triangular Pyramid
It is a tetrahedron, which is defined as a four- sided figure with all triangular sides.
It is a pyramid
Triangular based pyramid
a triangular pyramid
A geometric figure with a polygonal base and triangular sides is called a pyramid.
triangular pyramid
A triangular pyramid is a pyramid with a triangular base; all pyramids are by definition three-dimensional figures, so a triangular pyramid is indeed 3D.
# Square Pyramid # Rectangular Pyramid # Triangular Pyramid
It is a tetrahedron, which is defined as a four- sided figure with all triangular sides.
pyramid
Pyramid
A pyramid
A pyramid.