A cyclic quadrilateral ABCD is such that AB = BC, AD = DC and AC, BD intersect at O and BD is angle bisector of ∠B. If ∠CAD = 46°, then the measure of ∠AOB is equal to:
1
84°
2
86°
3
80°
4
90°
A cyclic quadrilateral ABCD is such that AB = BC, AD = DC and AC, BD intersect at O and BD is angle bisector of ∠B. If ∠CAD = 46°, then the measure of ∠AOB is equal to: