Question

is every polygon a closed curves? support your answer with atleast three different figure

Answer 1

What is a polygon?
A simple closed curve made of three or more line-segments is called a polygon. A polygon has at least three line-segments.
The line-segments of a polygon are named by the sides in it. Poly means many and gon means sides. Thus a polygon has many sides.
The different polygons having definite number of sides are given names according to the number of sides.
(i) A polygon with three sides is called a triangle .
Triangle
(ii) A polygon with four sides is called a quadrilateral .
Quadrilateral
(iii) A polygon with five sides is called a
pentagon .
Pentagon
(iv) A polygon with six sides is called a hexagon .
Hexagon
Thus a polygon is given its name on the basis of the number of its sides.