Respuesta :

Answer:

m<1 = 76°

m<2 = 76°

m<3 = 49°

Step-by-step explanation:

✔️m<1 = 180 - (47 + 57) (sum of triangle)

m<1 = 76°

✔️m<2 = m<1 (vertical angles are congruent)

m<2 = 76° (substitution)

✔️m<3 = 180 - (55 + m<2) (sum of triangle)

m<3 = 180 - (55 + 76) (substitution)

m<3 = 49°