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?
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?