Understanding Elementary Shapes
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 of a revolution
(f) One complete revolution
(i) Straight angle is of 180º and half of a revolution is 180º.
Hence, (i) ↔ (c)
(ii) Right angle is of 90º and one-fourth of a revolution is 90º.
Hence, (ii) ↔ (d)
(iii) Acute angles are the angles less than 90º. Also,…
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