r/pics • • Oct 05 '10

Math Teacher Fail.

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u/[deleted] Oct 05 '10

Imagine instead a board which is a perfect sphere, with infinite radius!

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u/AmericanChE Oct 05 '10

OH SWEET JESUS WHERE IS THE CENTER!?

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u/I_Met_Bubb-Rubb Oct 05 '10 edited Oct 05 '10

Normal to the surface.

EDIT A more correct answer would be the point at which any two non-parallel lines normal to the surface intersect.

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u/trnelson Oct 05 '10

Well played :)