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Mathematics 13 Online
OpenStudy (anonymous):

Can someone explain how to do these? What is the measure of ABC?

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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