Probably 6 if not 4 if not 8 if not 10.WHO CARES
Four.
4
Two triangles.
how many triangles are formed when any parallelogram and it diagonals are drawn
1. Opposite sides are equal 2. it is a parallelogram 3. all 4 angles (at vertices) are 900 4. diagonals are equal in length 5. diagonals bisect each other 6. triangles formed by a diagonal and 2 sides (opposite side for each triangle) are congruent 7. among the four triangles that are formed by the 2 diagonals, the vertically opposite triangles are congruent 8. if length=breadth, then the rectangle is a square 9. perimeter of the rectangle = 2 * ( length + breadth) 10. area of rectangle = length * breadth
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.
You would get two right-angled triangles.
10
The number of triangles formed by the diagonals of a 21 sided polygon is C(21,3) = 21x20x19/3x2x1 = 1,330.
6