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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 \(\frac{1}{2}\)of a revolution
                                                                                             (f) One complete revolution
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Question

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 \(\frac{1}{2}\)of a revolution
                                                                                             (f) One complete revolution

Answer

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Solution

(i) Straight angle\( = 180°\) or half of a revolution
Hence, (c) is correct answer
(ii) Right angle \(= 90°\) or one-fourth of a revolution
Hence, (d) is correct answer
(iii) Acute angle \(=\) less than \(90°\) or less than one-fourth of a revolution
Hence, (a) is correct answer
(iv) Obtuse angle \(=\) more than \(90°\) but less than \(180°\) or between\( \frac{1 }{ 4}\) and \(\frac{1 }{ 2}\) of a revolution
Hence, (e) is correct answer
(v) Reflex angle\( =\) more than \(180°\) but less than\( 360°\) or more than half a revolution
Hence, (b) is correct answer
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