## NCERT Solutions For Class 6 Maths Basic Geometrical Ideas Exercise 4.2

**NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas Ex 4.2**

**Exercise 4.2**

Ex 4.2 Class 6 Maths 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

Ex 4.2 Class 6 Maths Question 2.

Draw rough diagrams to illustrate the following:

(a) Open curve

(b) Closed curve

Solution:

Ex 4.2 Class 6 Maths Question 3.

Draw any polygon and shade

Solution:

ABCD is the required polygon whose interior region is shaded.

Ex 4.2 Class 6 Maths 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 closed curve.

Ex 4.2 Class 6 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.

Solution:

(a) Required closed curve is a circle.

(b) ABCD is an open curve made up of the line segments \(\overline { AB }\), \(\overline { BC }\) and \(\overline { CD }\) .

(c) A polygon with two sides is not possible.

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