Kite and trapezium are
simple open curves
polygons
parallelograms
made up of arcs
Kite and trapezium are polygons (simple closed curves made of line segments).
Illustrate, if possible, each one of the following with a rough diagram:
(a) A closed curve that is not a polygon.
(b) An open curve made up entirely of line segments.
(c) A polygon with two sides.