No. Both foci are always inside the ellipse, otherwise you don't have an ellipse.
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No.
No. Both foci are always inside the ellipse, otherwise you don't have an ellipse.
False
Two
It is a SPECIAL form of ellipse. In an ellipse the centre and the two foci are at separate points on one axid. In a circle the centre and the two foci are ALL at the circle centre.