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Mathematics 11 Online
OpenStudy (anonymous):

What is the sum of the measures of the interior angles of an 11-gon? @blackprincesssen

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):

\[180(11-2)\] \[180(9)\] \[1620\]

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

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.

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

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...

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