Question

. A solid which has four faces as triangle is called ? 

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Answer 1

The tetrahedron is one kind of pyramid, which is a polyhedron with a flat polygon base and triangular faces connecting the base to a common point. In the case of a tetrahedron the base is a triangle (any of the four faces can be considered the base), so a tetrahedron is also known as a "triangular pyramid".

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Answer 2

Answer:

Triangular pyramid

Step-by-step explanation:

A solid that has 4 faces as a triangle is called a triangular pyramid