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Mathematics 12 Online
OpenStudy (anonymous):

What is m∠A? A. 20° B. 100° C. 60° D. 80° http://static.k12.com/calms_media/media/1349000_1349500/1349454/1/98b1805b774de074a9a82a710a422baf6db81674/150523.jpg

OpenStudy (anonymous):

It would be C because 80-20 is 60

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