NCERT solutions for class 6 Maths


chapter – 4


Basic Geometrical Ideas


Exercise 4.2


Ex 4.2 Question 1.


Classify the following curves as (i) Open or (ii) Closed.

Solution:

(a)Open curve

(b) Closed curve

(c) Open curve

(d) Closed curve

(e) Closed curve


Ex 4.2 Question 2.


Draw rough diagrams to illustrate the following :
(a) Open curve (b) Closed curve.

Solution:


Ex 4.2 Question 3.


Draw any polygon and shade it’s interior.

Solution:


Ex 4.2 Question 4.


Consider the given figure and answer the questions :
(a) Is it a curve? (b) Is it closed?

Solution:

(a)Yes, it is a curve.

(b) Yes, it is a closed curve.


Ex 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.

Solution:

(a)

(b)

(c) No, it is not possible to draw a polygon with two sides.


 

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