it takes at least 3-6 years
An ellipse has two lines of mirror symmetry: the line that includes the two foci of the ellipse and the perpendicular bisector of the segment of that line between the two foci.
There are a total of 12 years.
Ellipse has no sides and
An ellipse has 2 foci. They are inside the ellipse, but they can't be said to be at the centre, as an ellipse doesn't have one.
100
None; an ellipse is a smooth curve, not a line.
An ellipse has rotational symmetry of order 2.
An ellipse has two focal points. These points are located along the major axis, equidistant from the center of the ellipse. The sum of the distances from any point on the ellipse to these two foci is constant, which is a defining property of an ellipse.
Two
None.
2
2