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二倍角公式證明
Author:
吳政憲
Topic:
Constructions
,
Trigonometric Functions
GeoGebra
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【案例】2018年全国1卷理科12题
三位數除以一位數（二）
四邊形的特性
GeoGebra笔记功能体验课件
兩組對邊相等和有直角的四邊形
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緯度、日照、影長
菱形
GGBstar
向量與坐標
同心圓
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Division
Interest Calculation
Quadratic Equations
Kite
Rectangle