supply the missing reasons for the following proof

Question

diagram explanation:

im going to try my best to explain the diagram but i hope you can understand it because i can’t add pictures.

there is a horizontal line that is intersected by 2 diagonal lines on opposite sides connecting underneath the horizontal line and making a triangle. this made 4 labeled angles (9 angles total). angle 1 and angle 2 are supplementary (angle 1 is acute) on the left side. angle 3 and angle 4 are vertical angles on the right side (angle 4 is in the same place as angle 1 just in the opposite side) angle 1 = angle 4 and angle 3.

fill in for the question marks:

Given: angle 2 is supplementary to angle 4

Prove: angle 1 = angle 3

statement:

1.) angle 2 and angle 4 are supplementary

reason:

1.) given

statement:

2.) angle 2 and angle 1 are supplementary

reason:

2.) supplementary angles add up to 180°

statement:

3.) angle 1 = angle 4

reason:

3.) ?

statement:

4.) angle 3 = angle 4

reason:

4.) vertical angles are congruent

statement:

5.) angle 1 = angle 3

reason:

5.) ?

again i hope i explained it well enough (maybe it would help to draw it out as you read it)

Answer 1

Here's what I think:

3: Angles supplementary to the same angle are congruent

angle 2 + angle 4 = 180

angle 2 + angle 1 = 180

angle 1 = angle 4

5: Transitive Property of Equality

angle 4 = angle 1

angle 4 = angle 3

angle 1 = angle 3

Answer 2

2 linear pair form supplementary angles

3 deffenition of supplementary angles

4 vertical angles are congruent

5 angles congruent to the same angles are congruent

I think it is close