Respuesta :

HajirahBibi
∠1 and 120 lies in a straight line. A straight line is 180.

∠1 + 120 = 180

∠1 = 180 - 120

∠1 = 60°



The sum of all the angles in a triangle is 180.

∠1 + ∠2 + 55 = 180

60 + ∠2 + 55 = 180

∠2 = 180 - 55 - 60

∠2 = 65°