A triangle in which two sides have the same length. Sometimes the third side (which may be called the base) is required to be not of the same length. The two angles opposite the sides of equal length (which may be called the base angles) are equal.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。