Question

choose the protractor that is in the correct position to measure the angle.

Explanation:

Step1: Place the protractor

Place the center of the protractor on the vertex \( E \) of the angle \( \angle DEF \).

Step2: Align the baseline

Align the baseline of the protractor with the side \( ED \) of the angle.

Answer:

The protractor should be placed such that its center is on vertex \( E \) and its baseline is along \( ED \).