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.

Solution:

(a) Closed curves can be traced without any break. They start and end in the same place. 

(b) Open curves are not continuous and are made up of line segments or curves which do not meet.

(c) A polygon is defined as a closed two-dimensional figure with three or more straight lines. The smallest polygon is a triangle having three sides. Thus, a polygon with 2 sides does not exist. 

NCERT Solutions for Class 6 Maths Chapter 4 Exercise 4.2 Question 5

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.

Summary:

Diagrams have been drawn to illustrate (a) A closed curve that is not a polygon. (b) An open curve is made up entirely of line segments. (c) A polygon with two sides does not exist.

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