If the line segments are straight, then it is a triangle.
A irregular is a closed plane figure formed by three or more line segments.
a polygon is a closed plane figure bounded by 3 or more line segments
A Triangle :)
A polygon.
a closed plane figure with 3 or more line segments is a polygon
A polygon, if all the line segments are in the same plane.
A polygon
A closed figure made up of line segments is called a polygon. The segments in a polygon are called sides or edges.
US DefinitionA trapezoid is a closed plane figure consisting of four line segments/sides; two of these line segments are parallel (but not equal in length) and two are nonparallel.(in the UK, this is called a trapezium)British DefinitionA trapezoid is a closed plane figure consisting of four line segments/sides; NONE of these line segments are parallel to any of the other line segments of the quadrilateral.(in the US this is just a quadrilateral)*(see the related links for images of trapezoids)
polygon
A polygon is a plane figure that is closed with straight line segments.
polygon
Polygon
polygon
If the line segments are straight, then it is a triangle.
That would be a polygon.