Polygon and they do not cross.
A circle is not formed from line segments.
A polygon, but only if all the line segments are coplanar.
An angle.
triangle
A triangle.
A circle is not formed from line segments.
A polygon.
polygon
A polygon.
A polygon, but only if all the line segments are coplanar.
polygon
polygon
It is an angle.
An angle.
triangle
A triangle.
polygon