Question

what is the measure of \\( \angle dcf \\)?
the measure of \\( \angle dcf \\) is \\( \square \\) degrees.

Explanation:

Step1: Add the two given angles

We know that \(\angle DCF=\angle DCE+\angle ECF\). Given \(\angle DCE = 75^{\circ}\) and \(\angle ECF=54^{\circ}\).
So, \(\angle DCF=75 + 54\)

Answer:

\(129\)