In problem 11-33, you used the relationship between the segment lengths formed by intersecting chords to calculate a missing length. But how are the measures of arcs intercepted by two intersecting chords related? Examine the diagram at right.
and using what you know about inscribed angles and the sum of the angles of a triangle. and , , and
Compare the result for
with and . Is there a relationship?
Find the average of the two arc lengths.