maripazgarcia29
maripazgarcia29 maripazgarcia29
  • 18-12-2020
  • Mathematics
contestada

I need help with this please

I need help with this please class=

Respuesta :

jomanaawaheed
jomanaawaheed jomanaawaheed
  • 18-12-2020

Answer:

x=21 interior angle =150 exterior angle=210

Step-by-step explanation:

to find the angle rule=(n-2)×180

n is the number of sides in the polygon

(12-2)×180=1800

1800/12=150 (this is the interior angle)

7x+3=150

x=21

exterior angle = 360-150=210

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