Dictionary
search :       browse : 
A B C D E F G H I J K L M
  N O P Q R S T U V W X Y Z
         
Description
Related Terms
Everyday Examples
Interactive Checkpoint
More Information
Challenge
How to use this dictionary
Contact
 Description  
 Vertex of an Angle:  The common endpoint of the two rays that serve as the sides of an angle.
In the parallelogram ABCD, point B is the vertex of angle ABC. The vertex of an angle is always the second point referenced when an angle is named.