Answer:
58° = measure of arc AC
Step-by-step explanation:
The measure of an angle formed by 2 chords is equal to 1/2 the sum of the measures of the intercepted arcs.
65 = (measure of arc AC + measure of arc BD)/2
= (measure of arc AC + 72)/2
130 = measure of arc AC + 72
58° = measure of arc AC
