anonymous
  • anonymous
what is the value of y, if 3y, 4y,and 5y are the exterior angles of a triangle?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
What is always the sum of the exterior angles of a triangle?
anonymous
  • anonymous
an exterior angle is equal to sum of two interior angles
anonymous
  • anonymous
Yes, but what is the sum of ALL 3 exterior angles? It always equals a specific number. Maybe draw a few triangles to convince yourself of this? Once you discover this fact, the rest of the problem is easy.

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anonymous
  • anonymous
OK...thank you
anonymous
  • anonymous
360 =D
anonymous
  • anonymous
Exterior angle always add to 360
anonymous
  • anonymous
3y + 4y + 5y = 360 12y = 360 y = 360 / 12 y = 30

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