Mathematics
18 Online
OpenStudy (anonymous):
Use the number of sides to name the polygon. Then find the value of each variable.
octagon; n = 269
octagon; n = 197
octagon; n = 125
octagon; n = 53
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OpenStudy (anonymous):
OpenStudy (saifoo.khan):
add them up!
OpenStudy (saifoo.khan):
use the formulae for total internal angle!
OpenStudy (anonymous):
can you give me the formula?
OpenStudy (saifoo.khan):
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OpenStudy (saifoo.khan):
n is the number of sides!
OpenStudy (anonymous):
i dont know :( i tryed it and i got an answer in the 1000's
OpenStudy (saifoo.khan):
(8-2) x 180
6 x 180
1080*
OpenStudy (anonymous):
could u help me with one when your done with lisa??
OpenStudy (saifoo.khan):
now add them up & equal them to 1080
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OpenStudy (anonymous):
k....1 sec
OpenStudy (anonymous):
im sry i still dont get it :(
OpenStudy (saifoo.khan):
ok, write down all the angles here!
OpenStudy (anonymous):
n,(n-12), (n-90),134, (n+16), n, 161,126
OpenStudy (saifoo.khan):
n + (n-12) + (n-90) +134 + (n+16) + n + 161 +126 = 1080
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OpenStudy (saifoo.khan):
solve now!
OpenStudy (saifoo.khan):
geting?
OpenStudy (anonymous):
ol..ok
OpenStudy (saifoo.khan):
getting*
OpenStudy (anonymous):
lol
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OpenStudy (anonymous):
*
OpenStudy (saifoo.khan):
got that?
OpenStudy (anonymous):
add the n's right?
OpenStudy (saifoo.khan):
yes, add n's & the integers as well
OpenStudy (anonymous):
i got 149
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OpenStudy (saifoo.khan):
5n + 455 = 1080
OpenStudy (saifoo.khan):
n = 125
OpenStudy (anonymous):
o...I got 335...must of added wrong...but thank you..now I will no how to do the others :)
OpenStudy (saifoo.khan):
:)
OpenStudy (saifoo.khan):
uw.