Cardioid
[af] Kardioïed
[ar] منحنى قلبي
[ast] Cardioide
[az] Kardioit
[bg] Кардиоида
[bs] Kardioida
[ca] Cardioide
[cs] Kardioida
[de] Kardioide
[el] Καρδιοειδής καμπύλη