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Author:
Wong Ka Ming
GeoGebra
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三位數除以一位數（二）
異分母分數減法
兩組對邊相等和有直角的四邊形
畫出對稱圖形
兩組對邊相等的四邊形
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正整數的指數律練習
文字工具：設定旋轉文字位置
與三個半圓相切的圓不規則區域著色全
三角形的四心－五線－內外二圓的副本
翰林數學_2下_CH3-1_點線角
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Cube
Stochastic Process or Random Process
Tangent Line or Tangent
Sine
Incircle or Inscribed Circle