Dear All
 
Maybe the following is a stupid question.
Assume I have 3 coordinate points (not limited to be in 2D or 3D space)
a, b, c.
It is known that these 3 points will define a plane.
The problem is how to get the normal direction that is orthogonal to
this plane.
 
Is there an easy way to calculate it using the values of a, b, and c?
 
Thanks for any point or help on this.
 
Fred

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