等腰三角形
数学
三角形的内圆和外圆
三角形不等式
欧几里德几何
欧拉公式
数学教育
不平等
牙石(牙科)
组合数学
域代数上的
纯数学
几何学
数学分析
医学
牙科
标识
DOI:10.1080/0025570x.2023.2266332
摘要
SummaryEuler’s inequality in Euclidean geometry is a famous result relating the circumradius and inradius of a triangle. We provide a new proof of this result using elementary ideas about area and isosceles triangles.MSC: 51M04 Additional informationNotes on contributorsNam Gu HeoNAM GU HEO (MR Author ID: 1106949) studied mathematics education and received an Ed.D. from the Korea National University of Education. Currently, he is a professor at Sunchon National University, Korea.
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