Answer:
C 86
Explanation:
You want the measure of the angle marked x° where chords cross. The angle marked x° intercepts an arc of 104° and one that is unmarked. The remaining arcs of the circle are marked 111° and 77°.
Measure of x
The measure of angle x is half the sum of the arcs it intercepts. One of those is given as 104°. The other will be ...
360° -111° -104° -77° = 68°
Then the value of x is ...
(104 +68)/2 = 172/2 = 86
The value of x is 86, choice C.
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