Question

Quadrilateral ABCD is inscribed in a circle. If angle B measures 112°, what is the measure of angle D?

Answer 1

68°

Explanation:

Since angles B and D are opposite each other, they are supplementary.

Answer 2

68°

Explanation:

If a quadrilateral is inscribed in a cirle, the sum of its opposite angles is 180°. Angles B and D are opposite => B+D=180° => D=180°-B=180°-112°=68°