Answer:
1) 56-gon: 360
2) 18-gon: 360
3) 284,493-gon: 360
4) 393-gon: 360
Explanation:
The sum of the exterior angles of any convex polygon is always 360 no matter how many sides has the polygon.
So, the answers are:
1) 56-gon: 360
2) 18-gon: 360
3) 284,493-gon: 360
4) 393-gon: 360
