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椭圆的两条垂直切线的交点轨迹
Author:
istone
Topic:
Ellipse
,
Geometric Transformations
GeoGebra
New Resources
兩位數加法
GeoGebra笔记功能体验课件
拼砌四邊形
【案例】2018年全国1卷理科12题
三位數除以一位數（二）
Discover Resources
向量的垂直分解
柱體建築師 5
Concept of Ratios 比的概念
学习几何
加法与乘法
Discover Topics
Volume
Reflection
Area
Frequency Distribution
Right Triangles