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

Explanation

(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 ¼ and ½ of a revolution.

(v) Reflex angle ↔ (b) More than half a revolution.