Question

if df = 15 and de = 6, find ef if e is between d and f.

Explanation:

Step1: Use the segment - addition postulate

If \(E\) is between \(D\) and \(F\), then \(DF=DE + EF\).

Step2: Solve for \(EF\)

We know that \(DF = 15\) and \(DE=6\). Substitute these values into the equation \(DF=DE + EF\). Then \(EF=DF - DE\).

$$EF=15 - 6$$

Answer:

\(9\)