What is the sum of the measures of the interior angles of an 11-gon?
@blackprincesssen
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OpenStudy (anonymous):
OpenStudy (freethinker):
est. 147.27 degrees
OpenStudy (freethinker):
it is called undecagon or an hendecagon
OpenStudy (anonymous):
The sum of interior angles of an n-gon is given by:
180° * (n - 2)
In this case, n = 11. So we have:
180° * (11 - 2)
==> 180° * 9
==> 1620°
Therefore, the interior angles of an 11-gon add up to 1620°.
Hope this helps!
OpenStudy (ryan123345):
\[180(11-2)\] \[180(9)\] \[1620\]
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OpenStudy (anonymous):
forgot to put my options sorry
A. 1980
B. 1800
C. 3600
D. 1440
E. 2880
F. 1620
OpenStudy (anonymous):
yay i got it right :D
OpenStudy (anonymous):
F
OpenStudy (freethinker):
lmao
OpenStudy (anonymous):
hey he coped off of me
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OpenStudy (freethinker):
I know right?
how about this…
you multiply 147.27 by 11
OpenStudy (anonymous):
i used my head for thim i not a cheater
OpenStudy (anonymous):
this*
OpenStudy (anonymous):
Okay,okay, I'm sorry. @blackprincesssen
OpenStudy (anonymous):
I deleted it.
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OpenStudy (anonymous):
lol
OpenStudy (freethinker):
how come I wasn't given a medal when I gave an idea what is the interior angles of a regular undecagon
OpenStudy (anonymous):
you got it wrong
OpenStudy (freethinker):
are you sure?
divide 1620 by 11
OpenStudy (anonymous):
you stayed 147.27
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OpenStudy (freethinker):
147.27 x 11 = ? est. 1620
OpenStudy (anonymous):
147.27 * 11 = 1619.97
OpenStudy (freethinker):
;)
OpenStudy (freethinker):
now you learned that a regular undecagon has angles of 147.27272727272727...