How do we deduce that an ellipse, when defined as a "stretched circle", has foci?
52226
Why are two definitions of ellipses equivalent?
28505
How to simulate the true reflective movement of a particle bouncing around in an ellipse?
17126
Significance of the second focus in elliptical orbits
138629
What are curves (generalized ellipses) with more than two focal points called and how do they look like?
7306
How is the equation of motion on an ellipse derived?
100404
Angle subtended at the centre by a segment of a circle
149319
Möbius transformations and concentric circles
149834
Technique for finding the centerline of a curved object?
56527
Ellipse formula from points
147537
Detecting an ellipse in a glaucoma photo
50278
Explicit formula for conformal map from ellipse to unit disc (interior to interior)
57274
Asphericity of pseudo circle
136936
How do you tell if a metric is curved?
156561
Minimizing distance between an ellipse and a point
39335
Enlarging an ellipses along normal direction
5086
Why is the derivative of a circle's area its perimeter (and similarly for spheres)?
20027
Distorted circles in axis environment with TikZ