Jamie is writing a proof of the theorem stated below.

Theorem: The sum of interior angles of a triangle is 180°.

He first drew the figure shown below.
Which theorem will he most likely use in the proof?
Answer

Vertical angles are congruent.

Supplements of congruent angles are congruent.

Alternate interior angles formed by parallel lines and their transversal are congruent.

Itwo angles of a triangle are congruent, the sides opposite these are congruent.

Question

Jamie is writing a proof of the theorem stated below.
 
Theorem: The sum of interior angles of a triangle is 180°.
 
He first drew the figure shown below.
Which theorem will he most likely use in the proof?
Answer
		
Vertical angles are congruent.
		
Supplements of congruent angles are congruent.
		
Alternate interior angles formed by parallel lines and their transversal are congruent.
		
Itwo angles of a triangle are congruent, the sides opposite these are congruent.

anonymous · Answer

@KingGeorge

anonymous · Answer

oh you need the pic!!! one second!

anonymous · Answer

attachment

kinggeorge · Answer

I was gonna say... Also, tell me what you think the solution will be and why, before I go anywhere with this please.

anonymous · Answer

i think it may be the last one because it has to do with triangles 0.0

kinggeorge · Answer

I would rather say the third one. My reasons for this is mainly the fact that Jamie drew two parallel lines. However, when you read the actual statement of the theorem, and look at the picture, you can see that this applies perfectly. 

Angle 1 is an alternate interior angle, and angle 2 is formed from a transversal.

anonymous · Answer

Oh i get it now!!!! thanks!

kinggeorge · Answer

You're welcome.