20 minutes is one-third of an hour (20 ÷ 60). Therefore, the minute hand makes 1/3 of a turn. It is more than a quarter turn but less than a half turn.
Class 5 Mathematics Maths-Mela Angles as Turns
Class 5 Mathematics Maths-Mela Chapter 3 Angles as Turns question answer
When the minute hand moves 20 minutes, it has covered one-third of the entire clock face. Since a full turn is 60 minutes, 20 ÷ 60 = 1/3 of a turn. This fraction shows the hand has moved more than a quarter turn (15 minutes) but less than a half turn (30 minutes). So, the movement is exactly one-third of a full turn.
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