The NCERT Solutions For Class 6 Maths Chapter 5 Understanding Elementary Shapes Exercise 5.3 covers the topics including acute, obtuse and reflex angles. An angle less than a right angle is acute, less than a straight angle, but more than a right angle is obtuse and larger than a straight angle is a reflex angle. Students can improve their understanding of the concepts by solving problems using the NCERT Solutions Class 6 Maths prepared by teachers at BYJU’S.
NCERT Solutions for Class 6 Chapter 5 Understanding Elementary Shapes Exercise 5.3
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Access NCERT Solutions for Class 6 Chapter 5: Understanding Elementary Shapes Exercise 5.3
1. Match the following:
(i) Straight angle (a) Less than one-fourth of 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 of a revolution
(v) Reflex angle (e) Between 1 / 4 and 1 / 2 of a revolution
(f) One complete revolution
Solutions:
(i) Straight angle = 1800 or half of a revolution
Hence, (c) is the correct answer
(ii) Right angle = 900 or one-fourth of a revolution
Hence, (d) is the correct answer
(iii) Acute angle = less than 900 or less than one-fourth of a revolution
Hence, (a) is the 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 the correct answer
(v) Reflex angle = more than 1800 but less than 3600 or more than half a revolution
Hence, (b) is the correct answer
2. Classify each one of the following angles as right, straight, acute, obtuse or reflex:
Solutions:
(i) The given angle is an acute angle it measures less than 900
(ii) The given angle is an obtuse angle as it measures more than 900 but less than 1800
(iii) The given angle is a right angle as it measures 900
(iv) The given angle is a reflex angle as it measures more than 1800 but less than 3600
(v) The given angle is a straight angle as it measures 1800
(vi) The given angle is an acute angle as it measures less than 900
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NCERT Solutions for Class 6 Maths Chapter 5
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