Durply
  • Durply
HELP PLZ WILL MEDAL AND FAN
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Durply
  • Durply
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Michele_Laino
  • Michele_Laino
that's right!
Durply
  • Durply
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Durply
  • Durply
@Michele_Laino
Michele_Laino
  • Michele_Laino
you have to apply this formula: (11-2)*180=...
Durply
  • Durply
=1620
Michele_Laino
  • Michele_Laino
that's right!
anonymous
  • anonymous
Its B i guess
Durply
  • Durply
B? nope
anonymous
  • anonymous
i mean, A sorry.. concave /convex .. confused
Durply
  • Durply
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Durply
  • Durply
B right
Michele_Laino
  • Michele_Laino
the general formula, is: \[\left( {N - 2} \right) \times 180\] where N is the number of sides of our polygon
Durply
  • Durply
for this one?
Durply
  • Durply
i thought it was 16*180/18
Michele_Laino
  • Michele_Laino
here we have to do this computation: \[\frac{{\left( {18 - 2} \right) \times 180}}{{18}} = ...\]
Durply
  • Durply
160 :D
Michele_Laino
  • Michele_Laino
correct!
Durply
  • Durply
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Michele_Laino
  • Michele_Laino
here we have to apply this formula: \[\left( {N - 2} \right) \times 180 = 1980\]
Michele_Laino
  • Michele_Laino
so, we have: \[N - 2 = \frac{{1980}}{{180}}\] N is the number of sides of our polygon
Durply
  • Durply
13 :D
Michele_Laino
  • Michele_Laino
ok!
Durply
  • Durply
OMG THX SO MUCH!!!!
Durply
  • Durply
your the BEST PERSON EVER!!
Michele_Laino
  • Michele_Laino
:D

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