Question

1. l •——2——• m ——?——• n ←——7——→

Explanation:

Step1: Identify segment addition

We know that \( LN = LM + MN \). Given \( LN = 7 \) and \( LM = 2 \).

Step2: Solve for \( MN \)

Substitute the known values into the equation: \( 7 = 2 + MN \). Then, subtract 2 from both sides: \( MN = 7 - 2 \).

Step3: Calculate the result

\( 7 - 2 = 5 \).

Answer:

5