NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas Ex 4.3

NCERT Solution, which is being run in all the schools of India, of the NCERT book Mathematics, which is taught in the school to all the students in class six, we have explained the solution of the book to the students in a step by step manner. Through this, students will be able to understand mathematics in a very short time with the well-solved NCERT solutions by expert teachers.

NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas Ex 4.3

Question 1.
Name the angles in the given figure.

Solution :
∠A or ∠DAB; ∠B or ∠ABC; ∠C or ∠BCD; ∠Dor ∠CDA.

Question 2.
In the given diagram, name the point (s)
(a) in the interior of ∠DOE
(b) in the exterior of∠EOF
(c) on ∠EOF.

Solution :
(a) A
(b) C, A, D
(c) E, B,0, F.

Question 3.
Draw rough diagrams of two angles such that they have
(a) One point in common
(b) Two points in common
(c) Three points in common
(d) Four points in common
(e) One ray in common.
Solution :
(a)

∠AOB and ∠BOC have one point O in common.
(b) ∠AOB and ∠OBC have two points O and B in common.

(c) Not possible
(d) Not possible
(e)

∠AOB and ∠BOC have one ray OB−→− in common

Question 1

Identify points in a given figure

Solution

Points are marked positions like:

• A
• B
• C

Answer:

$A,B,C$

Question 2

What is a line segment?

Solution

A line segment is a part of a line with two endpoints.

AB‾\overline{AB}AB

Answer:

$\text{A part of a line with two endpoints}$

Question 3

Identify endpoints of a line segment

Solution

For line segment AB:

• A is one endpoint
• B is another endpoint

Answer:

$A\text{ and }B$

Question 4

Give real-life examples of line segments

Solution

Examples:

• Edge of a table
• Ruler
• Pencil

Answer:

$\text{Ruler, Pencil, Table edge}$

Real-Life Applications

Line segments are used in:

• Construction of buildings
• Road and map measurements
• Engineering drawings
• Furniture design
• Geometry diagrams

Example:
A ruler represents a line segment.