Calculating the normal vector to the surface

Natalie89 · Oct 4, 2009

I know this is really basic, but I just can't seem to remember...

Say you have three points (0,0,2),(0,2,0) and (2,0,0) to form a triangle. How do you calculate the normal to the surface?

tiny-tim · Oct 5, 2009

Welcome to PF!

Hi Natalie89! Welcome to PF!

Hint: it has to be perpendicular to any two vectors in the surface …

so find any two vectors, and use the cross product

Calculating the normal vector to the surface

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Calculating the normal vector to the surface

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