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Part 1
In the figure, m angle 1 equals left parenthesis 6 x plus 8 right parenthesis degrees, m angle 2 equals left parenthesis 5 x plus 13 right parenthesis degrees, and m angle 4 equals left parenthesis 12 x plus 12 right parenthesis degrees. Your friend incorrectly says that mangle4equals58degrees. What is mangle4? What mistake might your friend have made?
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(This figure is not to scale.)
