Mathematics Class 6 NCERT Solutions: Chapter 5 Understanding Elementary Shapes Exercise 5.3

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Types of angles

Types of Angles

Types of angles

Q.1 Match the following:

Table of Different Types of Angle and Revolution
Table of Different Types of Angle And Revolution

(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 and of a revolution

(f)

one complete revolution

Answer:

Answer Table of Different Types of Angle and Its Revolution
Answer Table of Different Types of Angle And Its Revolution

(i)

Straight angle

(a)

half of a revolution

(ii)

Right angle

(b)

one-fourth a revolution

(iii)

Acute angle

(c)

less than one-fourth a revolution

(iv)

Obtuse angle

(d)

Between and of a revolution

(v)

Reflex angle

(e)

more than half a revolution

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

(a)

Image of Acute Angle

Image of Acute Angle

Image of Acute Angle

Answer: Acute angle (Less than

(b)

Image of Obtuse Angle

Image of Obtuse Angle

Image of Obtuse Angle

Answer: Obtuse angle (greater than and less than )

(C)

Image of Right Angle

Image of Right Angle

Image of Right Angle

Answer: Right angle (equals

(d)

Image of Reflex Angle

Image of Reflex Angle

Image of Reflex Angle

Answer: Reflex angle (greater than but less than )

(e)

Image of Straight Angle

Image of Straight Angle

Image of Straight Angle

Answer: Straight angle (equals

(f)

Image of 2 Acute Angles

Image of 2 Acute Angles

Image of 2 Acute Angles

Answer: Acute angle (less than