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A pyramid
A triangular prism has two triangular bases and three lateral rectangular faces. It has five faces in all so that it is a pentahedron.A triangular pyramid has a triangular base and three triangular lateral faces. It has 4 faces in all so that it is a tetrahedron.
It is a pentahedron with a rectangular base and four triangular lateral faces.
In a tetrahedron all the triangles have to be congruent. In a Triangular Pyramid, the lateral faces are all congruent to each other, but not always with the base triangle. Not necessarily. The lateral faces need to be congruent if it is a right pyramid, not otherwise. The apex of the pyramid need not be directly above the centre (however defined) of the base. Think of a triangular pyramid doing an impersonation of the Leaning Tower of Pisa!
No. By definition, the lateral faces of a pyramid are triangular.No. By definition, the lateral faces of a pyramid are triangular.No. By definition, the lateral faces of a pyramid are triangular.No. By definition, the lateral faces of a pyramid are triangular.
Triangular.A pyramid has triangular faces
They may be called lateral faces.
a tetrahedron, an icosahedron or a pyramid
A pyramid.
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A pyramid
A triangular prism has two triangular bases and three lateral rectangular faces. It has five faces in all so that it is a pentahedron.A triangular pyramid has a triangular base and three triangular lateral faces. It has 4 faces in all so that it is a tetrahedron.
That object would be called a triangular pyramid, also known as a tetrahedron.
The description given could fit that of a pyramid
It is a pentahedron with a rectangular base and four triangular lateral faces.
Triangular Pyramid......... The faces are Triangular....