# N-gon angles

What is the sum of interior angles 8-gon? What is the internal angle of a regular convex 8-polygon?

Result

s =  1080 °
A =  135 °

#### Solution:

$n = 8 \ \\ s = 180 \cdot \ (n-2) = 180 \cdot \ (8-2) = 1080 = 1080 ^\circ$
$A = s/n = 1080/8 = 135 = 135 ^\circ$

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