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Choose a picture. It will look wonky. You can push it one way or the other. See what it looks like when you do. When you think it's straight, then click on OK. It will fall over if you get it wrong!
Gravity pulls everything towards the ground. If something is straight up and down, it is at right angles to the ground. This means that it is less likely to fall over since it doesn't know which way to fall. When people build things they use a lot of right angles. See if you can spot them if you look around about you.
© Jo Edkins 2009 - Return to angles index