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| Keywords: Finding center of ellipse.gif en How to geometrically find the center of an ellipse <br> 1 Take two points on the ellipse A and B<br> 2 Take another point A' on the ellipse<br> 3 Draw a line through A' parallel to AB<br> 4 Let the other intersection of the new line and the ellipse be B'<br> 5 Let M be the midpoint of AB and M' the midpoint of A'B'<br> 6 Let I and I' be the intersections of the ellipse with MM'<br> 7 The center O is the midpoint of II' own Alkados 2010-05-16 This method also works for hyperbolas Animations of ellipses | ||||
