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教学素材：椭圆离心率
Author:
清风拂琴，陌上花开
GeoGebra
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探究三角形的全等條件
折扣
正方形雪花图案
龙形曲线-分形龙
撒针估算面积实验
Discover Resources
沈老師等腰直角幾何題
HKCEE-AM 2006 Q17
Graph of Tangent
含有任意量词与存在量词的最值问题
穿越球
Discover Topics
Congruence
Hyperbola
Isosceles Triangles
Linear Equations
Straight Lines