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9 diagonals
An octagon has 16 diagonals.
0.5*(82-24) = 20 diagonals
Four sided quadrilaterals have two diagonals.
8
9 diagonals
9 diagonals
In a 2d diamond there are 2 diagonals.
how many triangles are formed when any parallelogram and it diagonals are drawn
An octagon has 16 diagonals.
38 diagonals
Four sided quadrilaterals have two diagonals.
0.5*(82-24) = 20 diagonals
8
5693
If all of the diagonals are drawn from a vertex of an octagon, how many triangles are formed
It is 18 diagonals