Use a paragraph proof to prove:

If two parallel lines are cut by a transversal, then same-side interior angles are supplementary.

Question

Use a paragraph proof to prove: 

If two parallel lines are cut by a transversal, then same-side interior angles are supplementary.

anonymous · Answer

attachment

anonymous · Answer

Help perhaps lol @dpaInc

anonymous · Answer

I would like to learn how this is done.

goformit100 · Answer

|dw:1339135032695:dw|

goformit100 · Answer

se in the figure

anonymous · Answer

what?

anonymous · Answer

ok, what's tough with this one is that we don't know what theorems or postulates you already know so we could use them as reasons in your proof....

goformit100 · Answer

angle 1 and angle 2 are linear pairs

anonymous · Answer

So I am to prove that the statement is true?

anonymous · Answer

do you already know about vertical angles being congruent?

goformit100 · Answer

say @Airman000

anonymous · Answer

Yes I recall some of the proof to this.

anonymous · Answer

doesn't supplementary equal to 180?

anonymous · Answer

i just don't know the proof that proves this statement true, is it possible that the statement could be false?

goformit100 · Answer

180 equal supplementary in some cases

anonymous · Answer

But does it when it comes to same side interior angles?

goformit100 · Answer

the angle formed between two adjacent sides of a polygon and lying in its interior. 
The sum of the interior angles of any polygon is equal to the number of its sides minus two and multiplied by 180º.

anonymous · Answer

What is that about?

goformit100 · Answer

interior angles

anonymous · Answer

yes

anonymous · Answer

thank you