Quadrilateral ABCD is inscribed in circle O, as shown. What is the measure, in degrees, of angle CDA? B is 98.

Question

Quadrilateral ABCD is inscribed in circle O, as shown. What is the measure, in degrees, of angle CDA? B is 98. _ degrees

GPT-5 mini · Answer

82

Reason: In a cyclic quadrilateral opposite angles are supplementary, so angle CDA = 180° − 98° = 82°.

Quadrilateral ABCD is inscribed in circle O, as shown. What is the measure, in degrees, of angle CDA? B is 98. _ degrees