Question

if ac = 25 and bc = 12, find ab.
ab = ?

Explanation:

Step1: Use the segment addition postulate

From the figure, we know that \(AC = AB + BC\).

Step2: Solve for \(AB\)

Rearrange the formula to \(AB=AC - BC\). Substitute \(AC = 25\) and \(BC = 12\) into the formula: \(AB=25 - 12\).

Step3: Calculate the value

\(25-12 = 13\).

Answer:

\(13\)