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Mathematics 7 Online
OpenStudy (anonymous):

help

OpenStudy (anonymous):

OpenStudy (anonymous):

What school?

OpenStudy (anonymous):

I feel like I've seen this before

OpenStudy (anonymous):

k12

OpenStudy (anonymous):

60-180

OpenStudy (anonymous):

120?

OpenStudy (anonymous):

yup

OpenStudy (anonymous):

Opposite angles of a quadrilateral are supplementary, so <TAN + 60 = 180

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