Class VI

When the sum of the measures of two angles is that of a right angle, then each one of them is ______. 
  1. Acute angle 
  2. Obtuse angle 
  3. Right angle 
  4. Straight angle 
Find the number of right angles turned through by the hour hand of a clock when it goes from 12 to 6. 
  1. 4
  2. 3
  3. 1
  4. 2
Find the number of right angles turned through by the hour hand of a clock when it goes from 2 to 8. 
  1. 1
  2. 3
  3. 2
  4. 4
An angle whose measure is more than 90o .
  1. Straight angle 
  2. Acute angle 
  3. Right angle 
  4. Obtuse angle 
What fraction of a clockwise revolution does the hour hand of a clock turn through, when it goes from 1 to 10? 
  1. 3/4 
  2. 1/4 
  3. More than 3/4 
  4. None of these 
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