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Mathematics 10 Online
OpenStudy (anonymous):

line a and line b are parallel. If the measure of Ð1 is 47° and the measure of Ð4 is 49°, what is the measure, in degrees, of Ð3?

OpenStudy (nowhereman):

So what are those D1 to D4 things?

OpenStudy (anonymous):

angles >.<

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