一个椭圆的两个焦点分别在一个直角三角形的两条直角边上，这个三角形的直角顶点为什么不能在椭圆边上？ 知乎 Sketch Coloring Page

一个椭圆的两个焦点分别在一个直角三角形的两条直角边上，这个三角形的直角顶点为什么不能在椭圆边上？ 知乎 Template

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sketch #3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )

anonymous

anonymous
sketch #3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )

tomski一个椭圆的两个焦点分别在一个直角三角形的两条直角边上，这个三角形的直角顶点为什么不能在椭圆边上？ 知乎 coloring

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