cardioid

3 ENTRIES FOUND:

car·di·oid

noun \ˈkär-dē-ˌid\

Definition of CARDIOID

:  a heart-shaped curve that is traced by a point on the circumference of a circle rolling completely around an equal fixed circle and has an equation in one of the forms ρ = a(1 ± cos θ) or ρ = a(1 ± sin θ) in polar coordinates

Illustration of CARDIOID

First Known Use of CARDIOID

1753

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