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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
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
GeoGebra笔记功能体验课件
Discover Resources
winter vacation homework 3
拉格朗日插值法
reflectional symmetry_5
正方体截面
Ellipse_Vertical
Discover Topics
Distributions
Trigonometric Functions
Poisson Distribution
Conic Sections
General Quadrilateral