There are 8
6
Two triangles can be formed by the diagonals of one vertex of a four-sided polygon.
yes
The diagonals of a square for example divides it into 4 isosceles triangles
It is: 8-2 = 6 triangles
8
6
depends on what shape that vertex is in
21
120 triangles.
Eight triangles.
how many triangles are formed when any parallelogram and it diagonals are drawn
If all of the diagonals are drawn from a vertex of an octagon, how many triangles are formed
5 triangles are formed.
Two triangles can be formed by the diagonals of one vertex of a four-sided polygon.
10
The number of triangles formed by the diagonals of a 21 sided polygon is C(21,3) = 21x20x19/3x2x1 = 1,330.