STATEMENT REASON
1.
m 23-m24
1.
Given
2 22, 23 are
supplementary
02
sides in
rays
3. m2 2 + m 23= 180
3.
Definition of
agles
4. m2 + m 24-1804
4.
Substitution
5m 21-m 24
5.
Opposite
are
6.
m 22+ m 21 = 180*
6.
7. 21,22 are supplementary
7
Definition of
angles