Prove: 21 23
2
3
COD.
m
Statements
Reasons
1. Line I and line m intersect 1. given
2. Z1is supplementary to Z2 2. linear pair theorem
3. ?
3.?
4.41 23
Which statement and reason best completes the proof?
4. congruent supplements theorem
OA. 3. 23is supplementary to 22
OB.
3. m/1 + m/2 = 180°
OC.
3. 21is supplementary to 24
3. m/1 + m/3
= 180°
3. linear pair theorem
3. definition of supplementary angles
3. linear pair theorem
3. definition of supplementary angles