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I'm trying to figure out what the formula is to find the surface area of a non-regular tetrahedron when given the vertices coordinates.

Example:

Vertex $A$: $[0, 0, 5]$

Vertex $B$: $[-1, -1, 0]$

Vertex $C$: $[1, 0, 0]$

Vertex $D$: $[0, 2, 0]$

Basically I want to turn this user input into surface area.

Thank you

2 Answers 2