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GeoGebra
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Author:
chen mingchuan
GeoGebra
New Resources
兩位數除以一位數（二）
找出對稱軸
兩組對邊相等的四邊形
四邊形的特性
異分母分數減法
Discover Resources
極限不存在（雙路徑法）
畢氏定理的證明(三移動)
橢圓的定義
congruent (AAA)
testing book
Discover Topics
LCM and GCD
Confidence Interval
Indefinite Integral
General Quadrilateral
Area