equilateral
/ˌiːkwɪˈlætərəl/adjective
- having all its sides of the same length等边的：
an equilateral triangle.
等边三角形。
词源
late 16th cent.: from French équilateral or late Latin aequilateralis, from aequilaterus 'equal-sided' （based on Latin latus, later- 'side'）.