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Inscribed shapes


What is the measure of angle, D, E, G on circle O?
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
A circle centered around point O where points C D E F all lie on the circle. Line segment C E forms a chord. Line segment D F forms a chord. These segments intersect at point G. Line segments D E and C F form chords. These form triangles C F G and D E G. Angle C F G is fifty degrees.