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In the figure below, ABCD is a cyclic quadrilateral, AB = BC and angle BAC = 70°, then angle ADC is

In the figure below, ABCD is a cyclic quadrilateral, AB = BC and angle BAC = 70°, then angle ADC is

(a)

40°

(b)

80°

(c)

110°

(d)

140°

Answer:

Explanation