question_answer 15)

Match the following :

(i) Straight angle	(a) Less than one-fourth of a revolution
(ii) Right angle	(b) More than half of a revolution
(iii) Acute angle	(c) Half of a revolution
(iv) Obtuse angle	(d) One-fourth of a revolution
(v) Reflex angle	(e) Between\[\frac{1}{4}\]and\[\frac{1}{2}\]of a revolution
	(f) One complete revolution

Answer:

(i) Straight angle is half of a revolution. (ii) Right angle is one-fourth of a revolution. (iii) Acute angle is less than one-fourth of a revolution. (iv) Obtuse angle is between 1/4 and 1/2 of a revolution. (v) Reflex angle is more than half of a revolution. So, after matching, we find

(i) Straight angle	(c) Half of a revolution
(ii) Right angle	(d) One-fourth of a revolution
(iii) Acute angle	(a) Less than one-fourth of a revolution
(iv) Obtuse angle	(e) Between and 1/2 of a revolution
(v) Reflex angle	(b) More than half of a revolution