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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

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):

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

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

OpenStudy (saifoo.khan):

solve now!

OpenStudy (saifoo.khan):

geting?

OpenStudy (anonymous):

ol..ok

OpenStudy (saifoo.khan):

getting*

OpenStudy (anonymous):

lol

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

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.

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