Question

Given: m∠1+m∠2=100 and m∠1=80
Prove: m∠2=20

Answer 1

http://tinypic.com/r/2yw8h9t/6 here is the problem

Answer 2

m<1+m<2=100
80+m<2=100
m<2=100-80=20

Answer 3

ok @ElizabethScarlette

Answer 4

@thivitaa am i right?

Answer 5

1. Given
2. Substitution
3. Subtraction Property of Equality

Answer 6

in that case the 3rd and has to be an obtuse and le to add the 3rd angle then subtract by the 2nd angle to get the sum of that