Q: What was the geometry student looking for at the beach?7 J2 K- g& r: _
4 K6 s& |- b) L6 Z4 U
A: A tangent. ) n2 O7 e) L& Z( S! i7 ^! o, @4 u3 u% T8 P- L% C* ^' B
tangent 3 b8 _4 W# C3 V noun1 M8 f' Y3 Q' _% Z7 L' t/ f, s2 O
(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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