Complete the reasons for the proof.
Given:
m 23 = m 24
To Prove:
21, 22 are supplementary
2/3
STATEMENT
REASON
1 m23 m 2 4
1
given
2
Z2, Z3 are supplementary
sides in
rays
3. m
Ν
2
+ m 2 3 = 180°
3. Definition of
Igles
22+ m 2 4 - 180
4.
Substitution
5. m 21-m24
3.
Opposite
22 + m 2 1 - 180°
6.
7. 21, 22 are supplementary
7.
Definition of
angles