一、已知等边三角形的底边和高,以内切圆的圆心为坐标原点,求三个顶点的坐标 设底边为2c,高为h,腰为a,半径为r 1、勾股定理求腰长:a2 = h2 + c2 2、相似三角形求半径:c / a = r / ( h - r ),r = c * h / ( a + c ) 3、顶点坐标:(0,h - r Read More
posted @ 2023-05-24 09:45 闪亮的敦敦 Views(77) Comments(0) Diggs(0) Edit