Respuesta :

m < 1 = 140
m < 2 = 40

m < 2 + 90 + m < 3 = 180..(total of angles in a triangle are 180)
40 + 90 + <3 = 180
130 + <3 = 180
m < 3 = 180 - 130
m < 3 = 50


I assure you the answer is 50!

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