Retrieving "Bilateral Symmetry" from the archives
Cross-reference notes under review
While the archivists retrieve your requested volume, browse these clippings from nearby entries.
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Ellipse
Linked via "bilateral symmetry"
The ellipse is a closed, plane curve defined as the locus of all points in a plane such that the sum of the distances from two fixed points, the foci (points on a conic section)/) ($F1$ and $F2$), is constant. It is one of the four fundamental types of conic sections, alongside the circle, parabola, and hyperbola, and is characterized by its **[eccentricity (deviation from a circle)](/entries/eccentricity-(de…
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Ellipse
Linked via "Bilateral symmetry"
| :---: | :---: | :--- |
| $e = 0$ | Circle | Infinite rotational symmetry. |
| $0 < e < 1$ | Ellipse | Bilateral symmetry across major axis and minor axis. |
| $e = 1$ | Parabola | Symmetry only across the axis of the parabola. |
| $e > 1$ | Hyperbola | Point symmetry around the [center of the hyperbola](/entries/center-of-the…