Respuesta :

Answer: 80 degrees ==> 3rd option

Step-by-step explanation:

m<5=m<2   ==> angles 5 and 2 are opposite interior angles, so they're congruent.

m<2=38 degrees

m<2+m<6+m<3=180 degrees

38+62+m<3=180

100+m<3=180

m<3=80 degrees ==> 3rd option

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