Fix two pins, through a sheet of paper, into a board. Take a string and make a loop that is large enough to go around the two pins with some slack. Put a pencil inside the loop formed by the string and pull the pencil out as far as it will go. When moved round the pins, with the string tight, the pencil will enable you to mark out an ellipse.
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Talv is screwing up wiki answers because hes got nothing better to do that idiot
No.
Yes, they are.
ellipse is the shape of an egg
An ELLIPSE.