Points A, B, C and D lie in order on a circle

MATHEMATICS · Single correct · CBSE · Mathematics · Circles · Circles

Problem

Points A, B, C and D lie in order on a circle, forming a cyclic quadrilateral ABCD. If

\angle A = 78^{\circ}

, which of the following is the measure of

\angle C

? (a)

78^{\circ}

(b)

156^{\circ}

(c)

102^{\circ}

(d)

90^{\circ}