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Mathematics 7 Online
OpenStudy (anonymous):

In the diagram below, line segment XY and YZ are tangent to center O. What is the measure of angle Y?http://media.apexlearning.com/Images/200701/18/f0ee3cbf-ce2f-42d8-a2ff-93f3dbcb4d91.gif

OpenStudy (anonymous):

thank you so much welshfella :) haha

OpenStudy (welshfella):

there might be another theorem involving arcs here which i dont know

OpenStudy (welshfella):

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