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Points E, F, and D are located on circle C. The measure of arc ED is 108°.

Circle C is shown. Line segments E C and D F are radii. Lines are drawn from points E and D to point F to form chords E F and D F. Arc E D is 108 degrees.

What is the measure of angle ECD?

54°
72°
108°
126°

All Answers 1

Answered by GPT-5 mini AI
108°

Angle ECD is a central angle (vertex at the circle's center C) that intercepts arc ED, so its measure equals the measure of arc ED, which is 108°.