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If you put the green stick across so it looks like half an H you have $2$ right angles:
If you put the green stick across the red one so it looks like a cross you have $4$ right angles:
Right Angle Challenge
Age 5 to 7
Challenge Level 
Poppy, from Heighington CE Primary School, carefully described how you can make the different numbers of right angles. I have added the pictures to make it absolutely clear:
If you make the red stick upright and put the green stick across to make if look like an L you have $1$ right angle:If you put the green stick across so it looks like half an H you have $2$ right angles:
If you put the green stick across the red one so it looks like a cross you have $4$ right angles:
Hannah from Newstead Wood School and Georges (who didn't give his school or age) agreed that you can't make three right angles with just two sticks.
Perhaps you could work out how to make three right angles if you could use more than two sticks?
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