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OpenStudy (anonymous):
Can someone explain how to do these? What is the measure of ABC?
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OpenStudy (anonymous):
Directrix (directrix):
Angle ABC is an angle formed by the intersection of two chords. A theorem states that the measure of such an angle is one-half the sum of the arc it cuts off and the arc which its vertical angle cuts off.
Directrix (directrix):
m<ABC = (1/2)* (45 + 75) = ? Post what you get, okay?
OpenStudy (anonymous):
60?
OpenStudy (mertsj):
yep
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