anonymous
  • anonymous
Radius of incircle of a triangle = Area of triangle/Semiperimeter of the triangle. How?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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LollyLau
  • LollyLau
Who said that?
phi
  • phi
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LollyLau
  • LollyLau
You meant the sum?

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anonymous
  • anonymous
no....my textbook just says that formula. we're supposed to apply that formula in approrpriate sums. im asking for the formula's proof :P
anonymous
  • anonymous
says* = states
phi
  • phi
The center of the incircle is the intersection of the angle bisectors You end up with 6 right triangles for example, 2 with sides a and r add up the area of each
LollyLau
  • LollyLau
???
phi
  • phi
Not clear yet?
anonymous
  • anonymous
kind of.....not fully
phi
  • phi
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anonymous
  • anonymous
oh. wait. stop right there. :P I got it :D Thanks a lot :)
phi
  • phi
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phi
  • phi
These 2 triangles are congruent. Angle bisector makes angles =, 90 deg =, 3rd angle must be equal, plus they have equal side (radius)
anonymous
  • anonymous
I understood, phi. I intitally had problems with how you derived it, and then now i got it. Thanks.
anonymous
  • anonymous
Got it as in I got the answer. :)
phi
  • phi
It's nice when the light bulb goes on!
anonymous
  • anonymous
lol yup, totally :D!

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