**Class 6 Mathematics Chapter 4 |**

**Basic Geometrical Ideas ****| Exercise 4.2**

**Question 1.** Classify the following curves as (i) Open or (ii) Closed.

**Answer 1:** (a) Open curve (b) Closed curve (c) Open curve (d) Closed curve (e) Closed curve

**Question 2**. Draw rough diagrams to illustrate the following : (a) Open curve (b) Closed curve.

**Answer 2 :**

**a) Open curves**

**b) closed curve**

**Question 3.** Draw any polygon and shade its interior.

**Answer 3:**

**Question 4**. Consider the given figure and answer the questions : (a) Is it a curve? (b) Is it closed?

**Answer 4: **

a) Yes, it is a curve

b) Yes, it is closed.

**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 5 :**

(a)

(b)

(c) Polygon with two sides cannot be draw.