1tldo 1tldo 08-04-2020 Mathematics contestada GD is a diameter of circle C. Circle C is shown. Line segments C F, C G, C A, C B, C D, and C E are radii. Angle G C F is 51 degrees, angle F C E is 90 degrees, and D C E is 39 degrees. What is mArc G E B? 90° 180° 219° 231°