n-3 from each vertex.
Depends on the shape.
Three
17
In a 15-gon, each vertex can connect to other vertices to form diagonals. Specifically, a vertex can connect to (15 - 3 = 12) other vertices (excluding itself and its two adjacent vertices). Therefore, from one vertex of a 15-gon, 12 diagonals can be drawn.
110.Improved Answer:-It is 4
If all of the diagonals are drawn from a vertex of an octagon, how many triangles are formed
It is 18 diagonals
3
Three
Depends on the shape.
In a polygon with n sides, the number of diagonals that can be drawn from one vertex is given by the formula (n-3). Therefore, in a 35-sided polygon, you can draw (35-3) = 32 diagonals from one vertex.
36
5
In a 54-sided polygon, 53 possible diagonals can be drawn from one vertex to another. These diagonals will not intersect. Therefore, the interior will be divided into 54 regions by the 53 diagonals plus the two sides of the original polygon that adjoin the vertex from which the diagonals are drawn.
12-3 = 9
4
17