. . . "rtion of the line between A and B, including points A and B. A B ??? Ray AB???portion of line AB that starts at A and continues through B, and on past B. A B http://faculty.valenciacc.edu/ashaw/ Rev.S08 Click link to download other modules. 5 What are the basic terms? (cont.)??? Angle-formed by rotating a ray around its endpoint.??? The ray in its initial position is called the initial side of the" .