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 = 1800 or half of a revolution. Hence, (c) is correct answer.
(ii) Right angle = 900 or one-fourth of a revolution. Hence, (d) is correct answer.
(iii) Acute angle = less than 900 or less than one-fourth of a revolution. Hence, (a) is correct answer.
(iv) Obtuse angle = more than 900 but less than 1800 or between 1 / 4 and 1 / 2 of a revolution. Hence, (e) is correct answer.
(v) Reflex angle = more than 1800 but less than 3600 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 900
(b) Obtuse angle as it measures more than 900 but less than 1800
(ci) Right angle as it measures 900
(d) Reflex angle as it measures more than 1800 but less than 3600
(e) Straight angle as it measures 1800
(fi) Acute angle as it measures less than 900
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