6
5 triangles.
4
There are 8
A doedecagon is 12 sided, I am not sure if it would be correct to say it consists of line segments, but if it is, then 12. There are also 35 distinct diagonals that can be drawn from the vertices and the dodecagon can be divided up into 8 triangles by drawing the diagonals.
6
Three triangles
3 triangles
You Can Get 6 triangles
5 triangles.
4
There are 8
depends on what shape that vertex is in
A doedecagon is 12 sided, I am not sure if it would be correct to say it consists of line segments, but if it is, then 12. There are also 35 distinct diagonals that can be drawn from the vertices and the dodecagon can be divided up into 8 triangles by drawing the diagonals.
21
A heptagon has seven sides, so when drawing diagonals from one vertex, it will create five triangles. This is because each diagonal drawn from a single vertex will create a triangle until it intersects the previous diagonal. Therefore, the number of triangles formed by drawing all diagonals from one vertex in a heptagon is five.
rectangle centered at origin