answersLogoWhite

0


Best Answer

For an n-sided polygon, the number of diagonals is 1+2+3+....+(n-4)+2(n-3).

For a nine-sided polygon, there are 1+2+3+4+5+2(6)=27 diagonals.

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How many diagonals does a nine sided polygon?
Write your answer...
Submit
Still have questions?
magnify glass
imp