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Introduction to Trigonometry from a Unit Circle
Author:
Lam Yat Chun
GeoGebra
New Resources
畫出對稱圖形
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
判斷球體
球体的体积推导（优化版）
Discover Resources
邱子芸的ggb book
三節棍問題
小船平移2
旋轉圓弧
劉徽的「割圓術」的副本
Discover Topics
Linear Functions
Reflection
Vectors 3D (Three-Dimensional)
Quadrilaterals
Random Variables