anonymous
  • anonymous
Prove that the sum of the measures of the interior angles of a triangle is 180°. Be sure to create and name the appropriate geometric figures.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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DanJS
  • DanJS
You can use parallel lines and a transversal if that works for you
DanJS
  • DanJS
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DanJS
  • DanJS
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DanJS
  • DanJS
did you learn about those things?
anonymous
  • anonymous
of coarse
DanJS
  • DanJS
ok fill out equivalent angles somewhere so that a b and c form a line
DanJS
  • DanJS
move a to its corresponding angle, and move c to the alternate interior
DanJS
  • DanJS
|dw:1438046415721:dw|
anonymous
  • anonymous
so c is the intersecting point now?
DanJS
  • DanJS
they want you to show that the angles (a + b + c) = 180
DanJS
  • DanJS
using the parallel line and transversal line, you can arrange angles a b and c to make a line, which is 180 degrees
anonymous
  • anonymous
okay so this now would be a straight proving they equal 180
DanJS
  • DanJS
yes
anonymous
  • anonymous
okay thank you
DanJS
  • DanJS
you can say...
DanJS
  • DanJS
|dw:1438046829479:dw|
DanJS
  • DanJS
A + C is supplmntary to B , so A + B + C must be 180
anonymous
  • anonymous
yes that makes sense

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