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Mathematics 13 Online
OpenStudy (anonymous):

can someone plz help me with this? :)

OpenStudy (anonymous):

OpenStudy (jdoe0001):

http://www.mathsisfun.com/geometry/alternate-exterior-angles.html <---- scroll down to Parallel Lines and notice the "alternate exterior angles" and the "vertical angles" alternate exterior angles equal each other and so do vertical angles

OpenStudy (jdoe0001):

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