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प्रश्न
How many right angles do you make if you start facing south and turn north?
उत्तर
If we revolve one complete round in either clockwise or anti-clockwise direction, then we will revolve by 360º or 4 right angles and the two adjacent directions will be at 90º or 1 right angle away from each other.
If we start facing South and turn to North, then we make 2 right angles.
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