If $A, B, C$ are three points on a line and $B$ lies between $A$ and $C$ , then prove that $A C - A B = B C$

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Solution

Given $B$ is a point which lies on the line $A C$
$∴$ From Euclid's postulate,
$A B + B C = A C$
$\Rightarrow A C - A B = B C$
Hence, proved.

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