NCERT Solutions for Class 6 Mathematics Chapter 4 Basic Geometrical Ideas Exercise 4.2

Exercise 4.2

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Ex-4.1
Ex-4.2
Ex-4.3
Ex-4.4
Ex-4.5
Ex-4.6

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Q 1 - Ex 4.2 - Basic Geometrical Ideas - Chapter 4 - Class 6th NCERT Maths

Page No 78:

Question 1:

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

Answer:

(a) Open
(b) Closed
(c) Open
(d) Closed
(e) Closed

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Q 2 - Ex 4.2 - Basic Geometrical Ideas - Chapter 4 - Class 6th NCERT Maths

Question 2:

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

Answer:

(a) Open curve

(b) Closed curve

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Q 3 - Ex 4.2 - Basic Geometrical Ideas - Chapter 4 - Class 6th NCERT Maths

Question 3:

Draw any polygon and shade its interior.

Answer:

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Q 4 - Ex 4.2 - Basic Geometrical Ideas - Chapter 4 - Class 6th NCERT Maths

Question 4:

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

Answer:

(a) Yes
(b) Yes

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Q 5 - Ex 4.2 - Basic Geometrical Ideas - Chapter 4 - Class 6th NCERT Maths

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.

Answer:

(a)

(b)

(c) This is not possible as the polygon having the least number of sides is a triangle, which has three sides in it.