probably, 4. or maybe pi.
i believe that the answer is 8.....:)))
depends on what shape that vertex is in
21
If all of the diagonals are drawn from a vertex of an octagon, how many triangles are formed
A hexagon (six-sided polygon) can be divided into 4 triangles by drawing all of the diagonals from one vertex (only three lines can be drawn in this case, since each vertex already connects to two others on the edges of the form). If you instead drew lines from the center to each vertex, you would get 6 triangles.
If you are merely drawing from one vertex to all the others, the number of triangles in any n-sided figure is equal to n-2. In this case, a heptagon has seven sides, and thus (7 - 2) = 5 triangles can be drawn.
depends on what shape that vertex is in
3 triangles
You Can Get 6 triangles
Three triangles
There are 8
4
5 triangles.
21
If all of the diagonals are drawn from a vertex of an octagon, how many triangles are formed
12-3 = 9
Two triangles can be formed by the diagonals of one vertex of a four-sided polygon.
A hexagon (six-sided polygon) can be divided into 4 triangles by drawing all of the diagonals from one vertex (only three lines can be drawn in this case, since each vertex already connects to two others on the edges of the form). If you instead drew lines from the center to each vertex, you would get 6 triangles.