ABCD is a cyclic quadrilateral in which AB is parallel to CD. If angle B= 65 degrees ,then find all the other angles

Angle D=180-65 (in cyclic quadrilateral opp angles are supplementary)
             = 115

Angle A+B=180 (Angles on the same side of parallels are supplementary)
      Angel A=180-65=115

As we did in step one we can find angel C=180-angel A= 180-115=65

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