If all of the diagonals are drawn from a vertex of an octagon, how many triangles are formed
5 triangles are formed.
Suppose that the parallelogram is a rhombus (a parallelogram with equal sides). If we draw the diagonals, isosceles triangles are formed (where the median is also an angle bisector and perpendicular to the base). Since the diagonals of a parallelogram bisect each other, and the diagonals don't bisect the vertex angles where they are drawn, then the parallelogram is not a rhombus.
110.Improved Answer:-It is 4
Probably 6 if not 4 if not 8 if not 10.WHO CARES
There are 10 possible diagonals drawn from one vertex of the 13-gon which divide it into 11 nonoverlapping triangles.
Because the lines between each vertice of the figure are already drawn.