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ie 3
Author:
LAM YU SANG
GeoGebra
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四邊形的特性
画直线等分三角形的面积
算柱 (兩位數)
球体的体积推导（优化版）
畫出對稱圖形
Discover Resources
二項分佈
三角形重心軌跡
Addition and Subtraction of Polynomials 2 (多項式的加減法2)
Angles between line and planes in a cuboid
三角形面積
Discover Topics
Orthocenter
Complex Numbers
Cosine
Normal Distribution
Variance