What is the reason for the third step in this proof?

Given: a || b, and both lines are cut by transversal t.

Prove: 2 7

Proof:
Statement Reason
1. a || b given
2. 2 3 Vertical Angles Theorem
3. 3 6
4. 2 6 Transitive Property of Congruence
5. 6 7 Vertical Angles Theorem
6. 2 7 Transitive Property of Congruence
Transitive Property of Equality
Alternate Interior Angles Theorem
Corresponding Angles Theorem
Same-Side Interior Angles Theorem
Vertical Angles Theorem

Question

What is the reason for the third step in this proof?

Given: a || b, and both lines are cut by transversal t.

Prove: 2    7



Proof:
Statement	Reason
1. a || b	given
2. 2    3	Vertical Angles Theorem
3. 3    6	 
4. 2    6	Transitive Property of Congruence
5. 6    7	Vertical Angles Theorem
6. 2    7	Transitive Property of Congruence
Transitive Property of Equality
Alternate Interior Angles Theorem
Corresponding Angles Theorem
Same-Side Interior Angles Theorem
Vertical Angles Theorem

aum · Answer

A diagram seems to be missing.  Post a screenshot of the problem or use the Draw button below to draw and label the diagram.

anonymous · Answer

attachment

anonymous · Answer

so your just gonna ask for a diagram and not even bother helping?

anonymous · Answer

The answer is Deez Nutz.

Ha Ha.

Gooott'eem