There are 9 triangles in an 11 sided shape
Nine, as a n-gon can be cut in n-2 triangles.
The proper term for an 11 sided polygon is a hendecagon (undecagon is a mix of latin and greek roots) and you can triangulate it with as many triangles as you like. There is a minimum number of triangles though. The smallest i could get is 9, but you might be able to get it smaller
An undecagon has 11 sides.
An undecagon is an 11 sided polygon
undecagon has 43 diagonals (answer by erwin handsome)
a undecagon has eleven sides and angles.
An undecagon is an 11 sided shape and its interior angles add up to 1620 degrees
A undecagon has 44 diagonals. A dodecagon has 54 diagonals. An octagon has 20 diagonals. A heptagon has 14 diagonals.
An undecagon has eleven sides. That means that it has more sides than a decagon and fewer sides than a dodecagon.
None or 11.
An undecagon, or figure with 11 sides. has an interior angle of 147o
there are 27 triangles in a triangle
There are 15 triangles in a 17-agon
There are 44 diagonals in an 11 sided undecagon
There are no triangles.
it has 13 triangles
depends on what size triangles and what kind of triangles?