Segment addition postulate
If B is between A and C, then AB + BC = AC
The segment addition postulate is a fundamental concept in geometry that states that if there are three points on a line, then the distance between the first point and the second point plus the distance between the second point and the third point is equal to the distance between the first point and the third point. In other words, if we have a line segment with endpoints A and B, and another point C on the same line, then AC + CB is equal to AB. This postulate allows us to measure the length of a line segment using the distances between its endpoints and other points on the same line. It is an essential tool for solving problems in geometry involving line segments and their lengths.
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