Relax

Respuesta :

7. a hexagon (6 sides)

8. an octagon (8 sides)

9. hexadecagon (16 sides)

10. icosagon (20 sides)

hope this helps!

Answer:

i really hope this is right, but i'm not 100 % sure

Step-by-step explanation:

a convex polygon has 2 sides

720/ 2 = 360

1080/ 2 = 540

2520/2 = 1260

3240/ 2 = 1620