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### 4 Cards in this Set

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 The points of a line can be put into one-to-one correspondence with the real numbers so that the distance between any two points is the absolute value of the difference of the corresponding numbers. ruler postulate AB= |a-b| <--(A)----(B)--> If three points A, B, and C are collinear and B is between A and C, then AB + BC = AC. The three points must share an endpoint segment addition postulate (A)------(B)---(C) Given line AB and a point O on line AB. Consider rays OA and OB, as well as all the other rays that can be drawn, with O as an endpoint, on one side of line AB. These rays can be paired with the real numbers between 0 and 180 in such a way that: 1. Ray OA is paired with 0, and ray OB is paired with 180. 2. If ray OR is paired with a and ray OQ is paired with b, then m