8-the formula to find an exterior angle of a polygon is:
360/n
(n is the number of sides of the polygon)
so the answer is 40
[tex] \frac{360}{9} = 40[/tex]
9 - the formula to find an interior angle of polygon is:
[tex] \frac{(n - 2) \times 180}{n} [/tex]
so the answer is 135
[tex] \frac{(8 - 2) \times 180}{8} = \frac{6 \times 180}{8} = \frac{1080}{8} = 135[/tex]
good luck
