vertex
/verteks/ • noun (pl. vertices /vertiseez/ or vertexes) 1 the highest point; the top or apex. 2 Geometry each angular point of a polygon, polyhedron, or other figure. 3 a meeting point of two lines that form an angle. 4 Anatomy the crown of the head. — ORIGIN Latin, ‘whirlpool, crown of a head, vertex’.
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