A shape with three sides is called a triangle.
triangle...
Triangle.
A pyramid.
A cube...
A shape with three linear sides and one curved side can be drawn, but such a shape has no specific name.
There is no shape that is made up 3 sides that is not a triangle. Any shape that is made up of 3 sides is classified as a triangle no matter what shape or size it is.
A triangle has 3 sides
Tetradecagon is the correct name for a shape with 14 sides. :D
A shape with 3 sides is a triangle.
How about a triangle which is a 2 dimensional shape with 3 sides
3 sides