Geometrical Puzzle 4

Keep in shape with a geometric conundrum.

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Throwing shapes

These shapes look completely different, don't they? But don't believe your lying eyes, because three of them can actually be rearranged to form the exact same shape. Which is the odd one out?
Throwing shapes

You'd have to be a real "square" not to get this one. Get it? Square.

Yes, it's one of those puzzles where you have to count the number of shapes hidden...

Throwing shapes