In math, what is a vertex?

Answer by  esteban (1334)

A vertex can mean the point where two sides of a polygon meet. (The corner) It can also mean the "turning point" for a parabola, a hyperbola, or an ellipse.

Answer by  Binome (1975)

A vertex is either the corner point of a polygon, a node in a graph, or a point on a curve where the first derivative is 0.

Answer by  UpwardBoundPrecalcTutor (128)

Two concepts 1. Vertex of an angle is the point where two rays(orsegments) join 2. Vertex of figure such as parabola is its extreme point

Answer by  xparadigmshiftx (114)

A math is the common endpoint where two or more lines, or ray's etc meet. It's simply a POINT where two things meet.