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在教学椭圆的简单几何性质时,想到如下问题:椭圆的四个顶点连线构成菱形,该菱形的内切圆与椭圆有什么关系?为了简便起见,本文称上述菱形的内切圆为椭圆的基圆.定理在平面笛卡尔坐标系Oxy下,对于任给定的椭圆C:x~2/a~2+y~2/b~2=1(a>b>0),考虑所存
When teaching a simple geometric property of an ellipse, we come to the following questions: What is the relationship between the inscribed circle and the ellipse? The four inscribed lines of the ellipse form a rhombus. For the sake of simplicity, Basic Circle Theorem Theorem In a Cartesian Cartesian coordinate system Oxy, for any given elliptic C: x ~ 2 / a ~ 2 + y ~ 2 / b ~ 2 = 1 (a> b> 0)