sabina7136 sabina7136

05-12-2018
Mathematics

contestada

What is the sum of the interior angles of a convex nonagon?
1620°
1800°
1260°
3240°

Respuesta :

smmwaite smmwaite

05-12-2018

Answer:

1,260°

Step-by-step explanation:

Nonagon is a 9 sided polygon

Exterior angle = 360 ÷ 9

= 40

Interior angle + exterior angle = 180

Interior angle = 180 - 40

= 140°

Sum of interior angles = 140° × 9

= 1,260°

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