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Mathematics 21 Online
OpenStudy (anonymous):

If m ∠ 4 = 72˚, what is m ∠ 7? transversal EF crosses two parallel line segments AB and CD; angles 1, 2, 3, and 4 are formed by AB and EF; angles 5, 6, 7, and 8 are formed by CD and EF 68˚ 98˚ 108˚ 72˚

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