12
There are 15 triangles in a 17-agon
15 triangles
Technically, 12 PM doesn't exist. It's either 12 noon (3 hours) or 12 midnight (15 hours).
12 R 12
There is only one.
12
3
There are 15 triangles in a 17-agon
15 triangles
15 triangles!!!!!!!!!!
15
5*3 - 3*4 = 15 - 12 = 3
there are 15 triangles in a 17 sided polygon
There are 13
There are two triangles with sides 9 x 12 x 15 meters. Each of the two triangles is inversely congruent (mirror image) to the other.
I think there are 13 triangles in a 15 sided shape.. Because for convex shapes (Pentagons) You take 2 from how many sides there are in the same. Like 5-2= 3 triangles.. I could be wrong!