Respuesta :

<6 +<3 =180  straight line

128+<3 =180

subtract 128 from each side

<3 = 180-128

<3 = 52

<1 + <2 + <3 = 180  sum of the angles of a triangle

100 + <2 + 52  = 180

152 +<2 = 180

subtract 152 from each side

<2 = 180-152

<2 =28