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折扣 例1的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
sanjiaohanshu
四邊形的特性
【案例】2018年全国1卷理科12题
近似值：有效數字
找出對稱軸
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Summary
平行四邊形
生活中的平面圖形關係─平分
畢氏定理拼圖007(8片)
抛物线动态（不一样的做法）
Discover Topics
Solids or 3D Shapes
Algebra
Confidence Interval
Multiplication
Orthocenter