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教学素材:离心率相同的椭圆
Author:
清风拂琴,陌上花开
GeoGebra
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龙形曲线-分形龙2
盈利與虧蝕
百分數及其應用
椭圆内切圆链
GeoGebra数学资源(4-8年级)
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方格紙上畫平行四邊形4
Temp file
GGB10
二元一次方程式及其解的意義
比例中的定值問題(二)
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General Quadrilateral
Geometric Transformations
Quadrilaterals
Pyramid
Special Points