Q: What was the geometry student looking for at the beach?$ |+ I1 ]9 O# I% N
% Y9 R! ^" ~* Y! n) a0 @A: A tangent. ( `4 N5 Z; i7 {7 i1 D9 g3 C6 v
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(geometry) a straight line that touches the outside of a curve but does not cross it
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发表于 2009-4-8 12:18
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