arbelos
English
editEtymology
editFrom Ancient Greek ἄρβηλος (árbēlos) or ἄρβυλος (árbulos), literally "shoemaker's knife".
Noun
editarbelos (plural arbeloses)
- (geometry) A plane region bounded by a semicircle of diameter 1, connected to semicircles of diameters r and (1 − r), all oriented the same way and sharing a common baseline.