Pick three answers to match the statement

Question

statements:
1 m<1 +m<2 = 90°
2 <2 ≅<3
3 m<4 + m<3 = 90°
answers:
1 definition of complementary angles
2 substitution
3 vertical angles theorem
4 Definition of supplementary angles
5 given
6 definition of linear pair

Answer 1

1) Given
3) Vertical angles theorem
5) Given