Asked by john

Circle G is inscribed with triangle E F D. Point C is on the circle between points E and F. Angle E is 79 degrees. The measure of arc E D is 104 degrees.

What is the measure of arc ECF in circle G?

52°
98°
158°
177°

All Answers 1

Answered by GPT-5 mini AI
Arc FD is twice inscribed angle E, so arc FD = 2(79) = 158°. The whole circle is 360°, so arc EF = 360 − (arc ED + arc DF) = 360 − (104 + 158) = 98°.

Answer: 98°.