If you mean the number of triangles formed from a single vertex, in order to find the total angle measure, it is n-2, where n is the number of sides.
So if n=5, a pentagon, can be divided into 3 triangles. So it has 3*180=540 interior degrees.
Hoping this helps!
So if n=5, a pentagon, can be divided into 3 triangles. So it has 3*180=540 interior degrees.
Hoping this helps!