SOLVED:How does a trigonal pyramid differ from a tetrahedron so far as molecular geometry is concerned?

- It is a theorem of solid geometry that the volume of a tetrahedron is (1)/(3) (area of base) ·(height). Use this result to prove that the volume of a tetrahedron whose sides are the vectors 𝐚, 𝐛, and 𝐜 is (1)/(6)|𝐚 ·(𝐛 ×𝐜)| (see the accompanying figure). | Numerade

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Origami Tetrahedron – 3 Sided Pyramid Tutorial

Origami Single-Sheet Tetrahedron