Question

Quadrilateral ABCD is inscribed in a circle. Angle B measures 19°. What is the measure of angle D?

Answer 1

In a quadrilateral inscribed in a circle, the opposite angles are supplementary, which means they add up to 180 degrees.

So, if angle B measures 19 degrees, then the measure of angle D is:

Angle D = 180 degrees - Angle B

Angle D = 180 degrees - 19 degrees

Angle D = 161 degrees

Therefore, the measure of angle D is 161 degrees.