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过定点的直线切线的交点在定直线上
Author:
东海1号
Topic:
Conic Sections
GeoGebra
New Resources
三位數除以一位數（一）
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
GeoGebra笔记功能体验课件
球体的体积推导（优化版）
Discover Resources
龍騰4_1-1課隨1
ex 5
拋物線與光線反射
餘弦定理修正項及風車證明
Copy of 「相似三角形」任务2
Discover Topics
Quadrilaterals
Vectors 2D (Two-Dimensional)
Circle
Variance
Translation