Question

In a cyclic quadrilateral, if two of the angles are 70° and 80°, then find the other two angles-


a. 110°, 100°


b. 150°, 60°


c. 90°, 120°


d. cannot be determined

Answer 1

Answer is option A
In a cyclic quadrilateral the sum of opposite angles is 180
Therefore if one is 70 then its opposite would be 110 and if another is 80 it’s opposite would be 100.