NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes Ex 5.3

Ncert Solutions Chapter 5 Understanding Elementary Shapes Ex 5.3 Class 6th Maths Chapter 5 Exercise 5.3 Ncert Class 6 Maths Chapter 5 Exercise 5.3

NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes Ex 5.3

Question 1.
Match the following :
(i) Straight angle (a) Less than one-fourth a revolution.
(ii) Right angle    (b) More than half a revolution
(iii) Acute angle   (c) Half of a revolution
(iv) Obtuse angle (d) One-fourth a revolution
(v) Reflex angle    (e) Between 14 and 12 of a revolution (f) One complete revolution.
Solution :
(i) Straight angle ↔ (c) Half of a revolution
(ii) Right angle ↔ (d) One-fourth a revolution
(iii) Acute angle ↔ (a) Less than one-fourth a revolution
(iv) Obtuse angle ↔ (e) Between 1/4 and 1/2 of a revolution
(v) Reflex angle ↔ (b) More than half a revolution.

Question 2.
Classify each one of the following angles as right, straight, acute, obtuse or reflex :

Solution :
(a) Acute
(b) Obtuse
(c) Right
(d) Reflex
(e) Straight
(f) Acute.

Question 1

Identify shapes with number of sides

Solution

• Triangle → 3 sides
• Quadrilateral → 4 sides
• Pentagon → 5 sides

Answer:

$3,4,5\text{sides respectively}$

Question 2

Name the polygon with 4 sides

Solution

A polygon with 4 sides is called a quadrilateral.

Answer:

$Quadrilateral$

Question 3

Count vertices of a triangle

Solution

A triangle has 3 vertices.

$3$

Answer:

$3\text{vertices}$

Question 4

Identify real-life shapes

Solution

Examples:

• Traffic sign → Triangle
• Book → Rectangle
• Clock → Circle

Answer:

$\text{Triangle, Rectangle, Circle}$