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Geometry 8 Online
OpenStudy (anonymous):

What is the measure of XZ? (Geometry) Help -.- I'll add picture below :]

OpenStudy (anonymous):

OpenStudy (akashdeepdeb):

|dw:1406880036868:dw| XZ has to be 144. Why? Because the angle at the centre is always twice the angle at any point on the circle. This can be generalized by this figure: |dw:1406880168157:dw|

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