if all of the diagonals are drawn from a vertex of a hexagon, how many triangles are formed?
A hexagon (six-sided polygon) can be divided into 4 triangles by  drawing all of the diagonals from one vertex (only three lines can  be drawn in this case, since each verteâ¦x already connects to two  others on the edges of the form). If you instead drew lines from  the center to each vertex, you would get 6 triangles. Volcom99sk8r0.