Distance From Point to Plane (Plug point into plane LHS, absolute value, divide by |n|)

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Plug point into plane LHS, absolute value, divide by |n|

What each symbol means

SymbolWhat it stands for
planeax+by+cz+d=0
(x0,y0,z0)Point

When to use this

Plane equation normalized or not — formula uses full √(a²+b²+c²).