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Question

Triangular pyramid has 4 faces, __________ edges and __________vertices.


A

6

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B

4

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Solution

A triangular pyramid is a pyramid which has a triangular base. In geometry, vertices are essentially corners. All triangular-based pyramids, either regular or irregular, have four vertices.

Triangular-based pyramids have 6 edges, 3 are along the base and 3 are extending up from the base. If the six edges are of the same length, all the triangles are equilateral, and the pyramid is called a regular tetrahedron.



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