Question

ABCD is a cyclic quadrilateral in which BD is a diagonal and and angle CBD is equal to 30 degree and Angle DAB is equal to 70 degree find the measure of angle ABD

Answer 1

Step-by-step explanation:

since it is a cyclic quadrilateral

angle A=angle C = 70

angle DBC=DBA=30.

NOW ,abd is a triangle

using a.s.p of a triangle

A +B+D=180

70+B+30=180

B=180 -100

B=80 DEGREE. -answer