Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geometry A
plane curve defined as the set (orlocus ) ofpoints in theplane such that theproduct of thedistances to two fixed points isconstant (related to anellipse , for which thesum of the distances is constant).
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Named after the astronomer Giovanni Domenico Cassini, who studied them in 1680.
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