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Mathematics 7 Online
OpenStudy (anonymous):

How would I do this problem? The measure of arc DE = 123 degrees and the measure of BC = 55 degrees. Find the measure of A.

OpenStudy (anonymous):

OpenStudy (anonymous):

A is an exterior angle so A=(123-55)/2=...

OpenStudy (anonymous):

34?

OpenStudy (anonymous):

yes

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