欧几里得的

例句：

1. 1. The shape of the pyramid is equilateral, which is a characteristic of Euclideangeometry.
   金字塔的形状是等边形，这是欧几里得几何学的特征。
2. 2. In mathematics, Euclidean geometry is the study of shapes and their properties using the principles of Euclid's Elements.
   在数学中，欧几里得几何学研究使用欧几里得原理的形状及其属性。
3. 3. The Pythagorean theorem is a fundamental principle in Euclidean geometry.
   毕达哥拉斯定理是欧几里得几何学的一个基本原理。