I might be wrong but i believe you can make more than one with those 3 angles. the 120 and 40 can make one and if angled right can make 2 and the 10 deg on one of the other angles lines would give you a 3rd.
<span>8.66666666666. I'm not sure if there are any more 6's.</span>

- f (x) = 3x² + x
- Find f (-5).

Given,
Now, we have to find f (-5). To find this, we just need to substitute -5 in the place of x.
So,

Answer:
12 sides
Step-by-step explanation:
Given
Sum of interior angle = 1800 degrees
Required
Number of sides of the polygon
The sum of interior of a convex polygon is calculated using the following formula:
Sum = (n - 2) * 180
Where n is the number of sides of the polygon.
By substituting 1800 for Sum, we have

Divide through by 180


Add 2 to both sides


Re order

Hence, the number of sides of the polygon is 12