Answer:
Sum of the opposite pair of a cyclic quadrilateral is 180°.
c= 180-102= 78°
c= 180-102= 78°d= 180-92= 88°
intercepted arc
=>2(102°)= 140+a°
a=64°
Simillarly
=> 2(d°)= a°+b°
b°= 112°
so ....
a=64°
a=64°b=112°
a=64°b=112°c=78°
a=64°b=112°c=78°d=88
hope it helps you ....