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Mathematics 20 Online
OpenStudy (anonymous):

Calculate the m EBF , given m DA= 40° and m EF= 130°. http://static.k12.com/eli/bb/817/-1/0/2_36869_44974/-1/5c45df68fdad740c9f94d22ea5f92dd60c7a03f7/media/dd8207b1565fe748df2a298c89f697366c4d0a06/mediaasset_651803_1.jpg 40° 45° 75° 112.5

OpenStudy (mathstudent55):

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OpenStudy (mathstudent55):

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