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两角和的正弦公式
Author:
zhang hongwei
Topic:
Trigonometric Functions
GeoGebra
New Resources
畫出對稱圖形
兩位數加法
拼砌四邊形
兩位數除以一位數（二）
GeoGebra笔记功能体验课件
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百分數的應用
容積盒子
畢氏定理
對稱圖形
探究判定全等三角形的条件（SAS）！
Discover Topics
Logarithmic Functions
Differential Equation
Linear Equations
Standard Deviation
Limits