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Mathematics 10 Online
OpenStudy (anonymous):

The adjacent angles ∠1 and ∠2 have measures of

OpenStudy (anonymous):

OpenStudy (e.mccormick):

Know how chords of circles work?

OpenStudy (e.mccormick):

Wel, the formula you need is on this page: http://www.regentsprep.org/Regents/math/geometry/GP15/CircleAngles.htm 4. Angle Formed Inside of a Circle by Two Intersecting Chords:

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