I need more help again will medal and fan!!!
Write a paragraph proof of theorem 3-8: In a plane, if two lines are perpendicular to the same line, then they are parallel to each other.

- anonymous

- schrodinger

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- anonymous

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- anonymous

Please help @DanJS

- anonymous

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## More answers

- anonymous

can you help @jackthegreatest

- jackthegreatest

hey @cool4u2001
im not sure i can help, but i can try
sorry i just left off on ur problem

- anonymous

That fine, If you can try you know more than me. lol I do not get it at all!!

- jackthegreatest

ok

- jackthegreatest

r u given any angles degrees?

- jackthegreatest

i dont remember many theorems lol, its been a while since i did these type of problems

- anonymous

No, what i am given is that r is perpendicular to s and t is perpendicular to s. I'm trying to prove that r is parallel to t

- anonymous

oh wait if r and t are perpendicular to the same line then their parallel, Do you know what this theorems called?

- anonymous

I think it would be something like alternate interior angles theorem

- jackthegreatest

im thinking its the converse of something

- anonymous

I found a site; would any of these match it?
http://www.ehow.com/info_8183682_five-prove-two-lines-parallel.html

- jackthegreatest

wait a min, that means all of the angles r 90 degrees...

- anonymous

It alternative exterior angles i think

- jackthegreatest

haha i k the theorem, i found it on this website: http://web.cerritos.edu/dford/SitePages/Math_70_F13/PostulatesandTheorems.pdf

- jackthegreatest

If two coplanar lines are perpendicular to a
third line, then they are parallel to each
other

- jackthegreatest

idk wats its called...

- jackthegreatest

ahhh i know wat it is now, i think
converse of the parallel lines theorem

- jackthegreatest

If two lines are cut by a
transversal to form
pairs of congruent corresponding angles,
congruent alternate interior angles, or
congruent
alternate exterior angles, then the lines are
parallel.

- jackthegreatest

- jackthegreatest

hello...?

- anonymous

sorry had to take a shower and thanks

- jackthegreatest

welcome

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