# Class 6 Maths- 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 ¼ and ½ of a revolution

(f) One complete revolution

(i) Straight angle = c) 1800 or half of a revolution

ii) Right angle = d) 900 or one-fourth of a revolution

(iii) Acute angle = a) less than 900 or less than one-fourth of a revolution
Figure showing less than 900 or less than one-fourth of a revolution

(iv) Obtuse angle = e) more than 900 but less than 1800 or between 1 / 4 and 1 / 2 of a revolution
Figure showing more than 900 but less than 1800 or between 1 / 4 and 1 / 2 of a revolution

(v) Reflex angle = b) more than 1800 but less than 3600 or more than half a revolution
Figure showing more than 1800 but less than 3600 or more than half a revolution

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