Answer:
As follows,
Step-by-step explanation:
1.<4 and <5 form a linear pair.
2.<4 + <6 =180 (Given)
3.<4+<5=180 (From 1)
4.<4+<5=<4 + <6 ( From 2 & 3)
5.<5=<6 (Cancelling <4 on both sides on 4)
