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Mathematics 15 Online
OpenStudy (anonymous):

what is b picture in comments

OpenStudy (mertsj):

If two secants intersect outside the circle, the angle formed is 1/2 the difference of the intercepted arcs.

OpenStudy (anonymous):

the first was the wrong picture my bad

OpenStudy (mertsj):

Consecutive angles of a convex quadrilateral are supplementary

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