if m<1 = 60 degrees, then m<3 + m<5 = what?

|
\2|
1 \| 3
------- | ------
6 |\ 4
|5\
|
what is the transitive property of angle congruence?

3 answers

transitive: A≅B and B≅C ==> A≅C

No idea what the diagram shows.
m<1 = 76 degrees THEN M<3=
Find m<2