SOLUTION: If A,B,C are three points on a line and B is between A&C prove that AB+BC=AC

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Question 773686: If A,B,C are three points on a line and B is between A&C prove that
AB+BC=AC
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
Between: If A, B and C are distinct points, we say that B is between points A and C (A*B*C) if and only if d(A,B) + d(B,C) = d(A,C). In other words we usually do not need to prove definitions.