vertex Meaning in the Cambridge English Dictionary
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Meaning of “vertex” in the English Dictionary

"vertex" in British English

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vertexnoun [C]

uk   /ˈvɜː.teks/  us   /ˈvɝː.t̬eks/ (plural vertices or vertexes) specialized
(in ​mathematics) the ​point where two ​linesmeet to ​form an ​angle, or the ​point that is ​opposite the ​base of a ​shape: the vertex of a ​triangle/​cone/​pyramid the ​highestpoint of something
(Definition of vertex from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"vertex" in American English

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vertexnoun [C]

 /ˈvɜr·teks/ (plural vertexes or vertices  /ˈvɜr·təˌsiz/ )
geometry the ​point where two ​linesmeet to ​form an ​angle, or the ​point that is ​opposite the ​base of a ​shape
(Definition of vertex from the Cambridge Academic Content Dictionary © Cambridge University Press)
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