Table of Contents

Toggle**NCERT Solutions for class 6, Maths chapter 5** has basic learning concepts of various shapes. This class 6 maths exercise 5.3 is about knowledge of different types of angles which is explained with the help of clock. The questions in this exercise named as Understanding Elementary Shapes, Exercise 5.3 given below.

## Understanding Elementary Shapes, Exercise 5.3

**Q.1. Match the following:**

**Ans: ****(i) Straight angle** = 180^{0} or half of a revolution. Hence, (c) is correct answer.

**(ii) Right angle** = 90^{0} or one-fourth of a revolution. Hence, (d) is correct answer.

**(iii) Acute angle** = less than 90^{0} or less than one-fourth of a revolution. Hence, (a) is correct answer.

**(iv) Obtuse angle** = more than 90^{0} but less than 180^{0} or between 1 / 4 and 1 / 2 of a revolution. Hence, (e) is correct answer.

**(v) Reflex angle** = more than 180^{0} but less than 360^{0} or more than half a revolution. Hence, (b) is correct answer.

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

**Ans: **(a) Acute angle it measures less than 90^{0}

(b) Obtuse angle as it measures more than 90^{0} but less than 180^{0}

(ci) Right angle as it measures 90^{0}

(d) Reflex angle as it measures more than 180^{0} but less than 360^{0}

(e) Straight angle as it measures 180^{0}

(fi) Acute angle as it measures less than 90^{0}

## Chapter 5 : Understanding Elementary Shapes

**Understanding Elementary Shapes, Exercise 5.1**

**Understanding Elementary Shapes, Exercise 5.2**

**Understanding Elementary Shapes, Exercise 5.3**

**Understanding Elementary Shapes, Exercise 5.4**

**Understanding Elementary Shapes, Exercise 5.5**

**Understanding Elementary Shapes, Exercise 5.6**

**Understanding Elementary Shapes, Exercise 5.7**