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Mathematics 11 Online
OpenStudy (anonymous):

If the measure of arc CE = 30°, and m∠CDE = 30°, what is the measure of arc AB ?

OpenStudy (anonymous):

Directrix (directrix):

Here's the theorem you need. See attached.

Directrix (directrix):

m<CDE = 1/2 * ( x - 30) Solve for x. @Arianna.Stephen

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