18 triangles
Three triangles
5 triangles are formed.
Either 12,14,16,or18 I think 18. * * * * * The correct answers is 4. You can draw only 3 diagonals from one vertex.
98
18
There are 7 triangles in a nonegon
7
9-2 = 7 triangles
A nine sided shape has 7 triangles
10080
7
7
4.
if you need to know how many triangles are in a polygon ... just take the number of its sides and subtract for example. nonagon has 9 sides so it will be 9-2=7 so, a nonagon has 7 triangles
7
Five of them