2010015007

SubArea: 
Polygons
Level: 
B
Project ID: 
2010015007
Source Problem: 
9000121801
Accepted: 
0
Clonable: 
1
Easy: 
1
Find the number of diagonals in the regular octagon (a regular polygon with \(8\) vertices).
\(20\)
\( 24 \)
\( 8 \)
\( 40\)