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Calculating the normal vector to the surface

 
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Oct4-09, 10:01 PM   #1
 

Calculating the normal vector to the surface

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?
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Oct5-09, 03:45 AM   #2
 
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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
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