Calculating the normal vector to the surface


by Natalie89
Tags: cross product
Natalie89
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#1
Oct4-09, 10:01 PM
P: 24
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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tiny-tim
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#2
Oct5-09, 03:45 AM
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tiny-tim's Avatar
P: 26,167
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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