38 diagonals
5693
If all of the diagonals are drawn from a vertex of an octagon, how many triangles are formed
4
3
Depends on the shape.
1/2*(602-180) = 1710 diagonals
9 diagonals
9 diagonals
how many triangles are formed when any parallelogram and it diagonals are drawn
An octagon has 16 diagonals.
38 diagonals
0.5*(82-24) = 20 diagonals
Four sided quadrilaterals have two diagonals.
5693
8
If all of the diagonals are drawn from a vertex of an octagon, how many triangles are formed