complete a two-column proof.

Question

anonymous · Answer

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anonymous · Answer

Given: angle 2 is congruent to angle 4, measurement of angle 2=180 degrees
Prove: measurement of angle 3=70 degrees

anonymous · Answer

can anyone help me?

directrix · Answer

@Lovebird15 

Two questions I need to ask: Do you know that the lines which appear to be parallel are indeed parallel? That is, are they stated to be parallel?
And
The measure of angle 2 as shown cannot be 180. Will you check that? Thanks.

aripotta · Answer

if angle 2 was 180 degrees, angle 3 would be like, non-existent

anonymous · Answer

I figured out the question, thank you guys!

directrix · Answer

@Lovebird15  When you have time, will you tell us how you figured this out? We are learners, too.

anonymous · Answer

Once my teacher grades my work and i figure out if it is correct or not then i will let you know