Answer:
50
Step-by-step explanation:
m<1+m<2+m<3 = 180 this forms a straight line
m<2 = 90 degrees
m<1 + 90 + m<3 = 180
Subtract 90 from each side
m<1 + 90-90 + m<3 = 180-90
m<1 + m<3 = 90
70 +m<1+m<2 = 180 this forms a straight line
70 + m<1 + 90 = 180
Combine like terms
160 + m<1 = 180
Subtract 160 from each side
160-160 + m<1 = 180-160
m<1 = 20
m<1 + m<3 = 90
20 + m<3 = 90
Subtract 20 from each side
20-20 +m<3=90=20
m<3 = 70
We want to find m<3 - m<1
m<3 - m<1
70 -20
50
