Question

Which solid is a triangular pyramid?
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Answer 1

A triangular pyramid, also known as a tetrahedron, has a base that is a triangle and three triangular faces meeting at a point (the apex). Without seeing the images you've provided, which I can't view, I can suggest you look for a solid that has:

- A triangular base.
- Three additional triangular sides that connect to a single vertex at the top.

Please check the options you have and look for a shape that fits this description.