Etymology of the English word isosceles
the English word isosceles
derived from the Late Latin word isosceles (isosceles; having two equal sides)
derived from the Greek word isoskeles, ἰσοσκελής
using the Greek prefix iso-, ἰσο-
derived from the Greek word skelos, σκέλος (through the idea of leanness); the leg (as lank))
derived from the Greek word isoskele
derived from the Greek word isos, ἴσος, ἴσως (similar (in amount and kind); likely; perhaps)
derived from the Greek word skelos, σκέλος (through the idea of leanness); the leg (as lank))
derived from the Greek word isokeles