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Mathematics 18 Online
OpenStudy (anonymous):

if m angle RDC = 120°, then m arc DC = ? https://media.glynlyon.com/g_geo_2012/7/group179.gif

OpenStudy (anonymous):

sorry, what's the meaning of "m" ?

OpenStudy (anonymous):

i don't know, that's what it is straight out of my book

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