In general? Infinite.
In the picture you were looking at when you asked this question? I don't know.
there are 27 triangles in a triangle
There are 15 triangles in a 17-agon
15 triangles!!!!!!!!!!
no triangles
it has 13 triangles
There are no triangles.
15 triangles
depends on what size triangles and what kind of triangles?
A heptagon has 5 triangles.
7 triangles
There are 7 triangles in a nonegon
There are 186 triangles