Hi everyone, so here's the problem:

We got a triangle in a 3D room defined by the coordinates:

A = (1, 2, -1)

B = (3, 1, 4)

C = (0, 2, 3)

What's the area of the triangle?

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If it were just defined in a 2D plane that'd would have been easier.

So maybe it would be good to redefine the triangle into a plane?