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2 would equal to 41 because since its a straight line you would do 180-139 and get 41. Have a good day and ask questions!! :)

-Kaylie
A straight line is 180 degrees. So, since the line bisects (or splits the straight line in 2) angle 1 and angle 2 add up to equal 180 degrees.
So, to find angle 2, subtract 139 degrees from 180 to get the second angle, which would be 41 degrees

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