what is a equilateral
equilateral. adj. 1. (Mathematics) having all sides of equal length: an equilateral triangle. n. 2. (Mathematics) a geometric figure having all its sides of equal length. 3. (Mathematics) a side that is equal in length to other sides. (Ëi kwÉËlaet kwÉËlÃ¦t Ér, Él ËÉk-). wÉ. adj