What is a Vertex?

Date: 12/06/2001 at 21:11:39
From: Sarah
Subject: Vertices

What does vertices mean?

Date: 12/07/2001 at 09:53:55
From: Doctor Sarah
Subject: Re: Vertices

Hi Sarah - thanks for writing to Dr. Math.

The vertex is the point at which two rays of an angle or two edges of 
a polygon meet.

            
              /
             /
            /  The vertex is the point about which the angle is 
           /   measured.
   vertex /___________



The plural of vertex is vertices.  


             vertex
               /\
              /  \
             /    \
            /      \
           /        \
   vertex /__________\ vertex


A triangle has three vertices.


- Doctor Sarah, The Math Forum
  http://mathforum.org/dr.math/