+980 Trapezoid HGFE is inscribed in a circle, with EF parallel GH. If arc GH is 70 degrees, arc EH is x^2 - 2x degrees, and arc FG is 56 - 3x degrees, where x > 0, find arc EPF, in degrees.
+1490 Trapezoid HGFE is inscribed in a circle, with EF parallel GH. If arc GH is 70 degrees, arc EH is x^2 - 2x degrees and arc FG is 56 - 3x degrees, where x > 0, find arc EPF, in degrees.
arc EH = arc FG
x2 - 2x = 56 - 3x x = 7
72- 14 = 35 56 - 21 = 35
arc EPF = 360 - 140 = 220º
