Respuesta :
a linear pair means the two angles add up to equal 180 degrees
so
m<1 + m<2 = 180
100 + 20x + 20x = 180
40x = 80
x = 2
m<1 = 100 + 20x = 100 + 20(2) = 140
answer
c.
140°
so
m<1 + m<2 = 180
100 + 20x + 20x = 180
40x = 80
x = 2
m<1 = 100 + 20x = 100 + 20(2) = 140
answer
c.
140°