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公切線(配合Dilate指令)
Author:
連琨銘
GeoGebra
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三位數除以一位數（二）
兩組對邊相等的四邊形
小数 的副本
sanjiaohanshu
異分母分數減法
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Triangle
三角形外心
dragon(龙)
圖5(動能分析)
随机三角形背景
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Continuity
Cosine
Area
Quadratic Equations
Geometric Transformations