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like: tangential line, tangent
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ENGLISH DEFINITIONS
exact:
VNEN
tiếp tuyến
*
☊
tangential line, tangent
*
☊
all words:
VNEN
tiếp tuyến
*
☊
tangential line, tangent
*
☊
ℹ
tiếp tuyến * ☊ 
tangential line, tangent * ☊ tiếp tuyến * ☊ tangential line, tangent * ☊