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### Number and algebra

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# Clock Hands

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### Watch the Clock

### Take the Right Angle

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Age 7 to 11

Challenge Level

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- Getting Started
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You could cut out hands from coloured tissue paper or coloured
overhead transparencies so you can see the overlap better.

During the third hour after midnight the hands on a clock point in the same direction (so one hand is over the top of the other). At what time, to the nearest second, does this happen?

How many times in twelve hours do the hands of a clock form a right angle? Use the interactivity to check your answers.