Q: What was the geometry student looking for at the beach?& b9 Z4 G& W% q# ^ `# T! [
3 _ w5 n* c% `% j2 Q% S+ s7 YA: A tangent. 2 ~4 Z# [( H# u
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tangent , p; V1 g, T* |# H$ x
noun 4 M; ^% O( u) r# h- ? (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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