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help

 Jun 28, 2021
 #1
avatar+502 
+2

nvm i got it, 20 right?

 Jun 28, 2021
edited by mworkhard222  Jun 28, 2021
 #2
avatar+151 
+3

are you asking for confirmation i dont know?

we have $9x+x=180 \therefore  x=18$

since 18 is the exterior angle, it means the interior angle is 162.

that gives you $ 162n\:=\:180n\:−\:360\: $which implies that $ n=20 $ so you are correct $\overset{. \: .}{\smile}  $

UsernameTooShort  Jun 28, 2021
edited by UsernameTooShort  Jun 28, 2021

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