When people think of a triangular pyramid, most will automatically think of it as a type of Platonic Solid - the Tetrahedon. So I feel I must clarify this first.
Every tetrahedron is a triangular pyramid, but every triangular pyramid is NOT a tetrahedron. It is only a Platonic Solid if all it's faces are congruent, regular polygons, in this case
if every triangle is equilateral and equal in size.
Image | |
Base Shape | |
Faces |
Four The three side faces are triangles and the base is also a triangle. |
Vertices |
4 Vertices |
Edges |
6 Edges |
Surface Area |
Where: t = lateral height; P = Perimeter of Base; B = Area of Base |
Volume |
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