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'Right Angle Challenge' printed from http://nrich.maths.org/

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How can you place two sticks to make one right angle?
Now make two right angles using the two sticks.
Can you make three right angles? Four right angles?

You might like to use this interactivity to have a go. Click on the buttons on the right to rotate each stick, then click and drag on the stick itself to move it into a new position.

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