anonymous
  • anonymous
I have another question (then another one) but I am really just trying to understand this. So there are two horizontal pararell lines intersected by a transversal.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
I'll draw it really quickly
anonymous
  • anonymous
|dw:1443726570597:dw|
anonymous
  • anonymous
I think it has something to do with interior angles but I get lost after that

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freckles
  • freckles
|dw:1443726687361:dw|
freckles
  • freckles
where a+b=180
freckles
  • freckles
|dw:1443726817641:dw|
freckles
  • freckles
so we know 2x+1=85
freckles
  • freckles
and 85+(3y+5)=180 since a+b=180
anonymous
  • anonymous
we know that 2x+1=85 because it is congruent to the one that says 85, right?
freckles
  • freckles
the angle that has measure 2x+1 and the angle that has measure 85 are called alternate interior angles
freckles
  • freckles
so the angle that has measure 2x+1 and the angle that has measure 85 are congruent therefore 2x+1=85
anonymous
  • anonymous
Ohhh okay, now I can get y, which would be 85+(3y+5)=180
anonymous
  • anonymous
But what about x?
freckles
  • freckles
what do you mean about x?
freckles
  • freckles
you have to both equations
freckles
  • freckles
2x+1=85 and 85+(3y+5)=180
anonymous
  • anonymous
Ohhh okay sorry I totally missed that. Thank you very much I understand it better now
freckles
  • freckles
np
freckles
  • freckles
http://www.mathwarehouse.com/geometry/angle/parallel-lines-cut-transversal.php here is site that you might like though in that first example where they talk about can you identify each type of congurent angle... I think the third column should read corresponding angles
freckles
  • freckles
It also mentioned something about a Z test never heard of that before now but you may find that test helpful it is for testing what angles are congruent

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