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垂心(劉虹圻623)
Author:
呂麗珠
Topic:
Orthocenter
GeoGebra
New Resources
兩位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
GeoGebra笔记功能体验课件
拼砌四邊形
畫出對稱圖形
Discover Resources
正弦函数图像
Multiplication of polynomials 2 (多項式的乘法 2)
真分數乘以真分數
Copy of 方格紙上畫四邊形
S0G5平均不等式（无字证明）
Discover Topics
Parabola
Cylinder
Equations
Combinatorics
Cuboid