Q.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 $$\frac{1}{4}$$ and $$\frac{1}{4}$$ of a revolution (f) One complete revolution

(i) Straight angle $$\rightarrow$$ (c) Half of a revolution.
(ii) Right angle $$\rightarrow$$ (d) One-fourth of revolution.
(iii) Acute angle $$\rightarrow$$ (a) Less than one-fourth of a revolution.
(iv) Obtuse angle $$\rightarrow$$ (e) Between 14 and 12 of a revolution.
(v) Reflex angle $$\rightarrow$$ (f) One complete revolution, right, acute, obtuse or reflex.