How much of a full turn?

This task is about angles of rotation.
Through what fraction of a full turn (360°) about the centre of rotation (black dot) would each figure have to be rotated so it looks exactly the same (for example, a quarter turn)?

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a) 
rotation-shape-1.gif
Rotation =

Question 1Change answer

b)
rotation-shape-2.gif
Rotation =

Question 1Change answer

c)
rotation-shape-3.gif
Rotation =

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d)
rotation-shape-4.gif
Rotation =

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e)
rotation-shape-5.gif
Rotation =
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