Question

If mL DOC = 44º and mL COB = 80°,

find the measure of the indicated arc
in circle o.
D
с
O
E
B
mDB = [?]°

Answer 1

The answer is 80 arc cb has the same measures as the central angle

Answer 2

124°

Explanation:

measure of arc DC = 44 because the measure of central angle equals the measure of its arc.

measure of arc CB = 80 because the measure of central angle equals the measure of its arc.

measure of arc DC = measure of arc DC + measure of arc CB

= 44 + 80 = 124°