# Eccentricity (mathematics)English: Eccentricity (mathematics)

Aw types o conic sections, arranged wi increasin eccentricity. Note that curvature decreases wi eccentricity, an that none o these curves intersect.

In mathematics, the eccentricity, denotit e or ${\displaystyle \varepsilon }$, is a parameter associated wi every conic section. It can be thoucht o as a measur o hou much the conic section deviates frae bein circular.

In pairticular,

• The eccentricity o a circle is zero.
Ellipses, hyperbolas wi aw possible eccentricites frae zero tae infinity an a parabola on ane cubic surface.
• The eccentricity o an ellipse which is nae a circle is greater nor zero but less nor 1.
• The eccentricity o a parabola is 1.
• The eccentricity o a hyperbola is greater nor 1.

Furthermore, twa conic sections are seemilar if an anly if thay hae the same eccentricity.

Other Languages
беларуская: Эксцэнтрысітэт
беларуская (тарашкевіца)‎: Эксцэнтрысытэт
bosanski: Ekscentricitet
català: Excentricitat
Ελληνικά: Εκκεντρότητα
Esperanto: Discentreco
hrvatski: Ekscentricitet

한국어: 이심률
lietuvių: Ekscentricitetas
Plattdüütsch: Exzentrizität
русиньскый: Ексцентрицита
srpskohrvatski / српскохрватски: Ekscentricitet
slovenščina: Izsrednost
српски / srpski: Ексцентрицитет
svenska: Excentricitet
українська: Ексцентриситет
oʻzbekcha/ўзбекча: Ekssentrisitet
Tiếng Việt: Độ lệch tâm