Summary: Math 475 Some Definitions from Chapter 2 Put Your Name In Here
For this assignment, you should copy this document as closely as possible. Put your name in the
top right corner. These are some definitions from Chapter 2 that you should already know.
1. Definition - A segment AB consists of points A and B and all those points C on the line
through A and B such that C is between A and B.
2. Definition - A ray
AB consists of the segment AB together with those points C on the line
through A and B such that B is between A and C.
3. Definition - The angle with vertex A consists o f the point A together with the two rays
AC (The sides of the angle). We denote an angle with vertex A and the sides
AC by BAC.
4. Some Notation: