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Rule

Segment Addition Postulate

If a point

B

lies on the line segment with endpoints

A

and

C,

the length of

\overline{A C}

can be calculated by adding the lengths of the smaller segments. Take a look at the provided diagram to understand this postulate better.

The length of segment $A C$ can be found by adding the lengths of its smaller segments $A B$ and $B C .$

$A B + B C = A C$

This statement is accepted as true or valid without a proof because it is a postulate.

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