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
 Challenge
 Ray:  A ray begins at a point and goes on forever in one direction.

Angle Bisector: Given a triangle and an angle bisector, determine proportions comparing the lengths of the various segments that form the triangle.