The point about which an angle is measured is called the angle"s vertex, and the angle

associated with a given vertex is called the vertex angle.

You are watching: What is the vertex of the angle point

In a polygon, the (interior, i.e., measured on the interior side of the vertex) are generally denoted

. The sum of interior angles in any
-gon is given by
radians, or
(Zwillinger 1995, p.270).


Zwillinger, D. (Ed.). CRCStandard Mathematical Tables and Formulae. Boca Raton, FL: CRC Press, 1995.


Weisstein, Eric W. "Vertex Angle." Fromlifwynnfoundation.org--A lifwynnfoundation.org Web Resource. https://lifwynnfoundation.org/VertexAngle.html

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