Question

In circle O, AE and DC are chords and intersect at B. If arc AC is 36 degrees and arc DE is 20 degrees, what is the measure of angle ABC? (Type in numbers only)

Answer 1

8degrees

Explanation:

Since the angle at the vertex is half the difference of the angles at the arc, hence;

<B = 1/2(36 - 20)

<B = 1/2 (16)

<B = 8

Hence the measure of angle ABC is 8degrees