9000121801

SubArea: 
Polygons
Level: 
B
Project ID: 
9000121801
Source Problem: 
2010015007
Accepted: 
1
Clonable: 
1
Easy: 
1
Find the number of diagonals in the regular decagon (a regular polygon with \(10\) vertices).
\(35\)
\(7\)
\(10\)
\(70\)