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Tangent to circle
Author:
johnmayhk
GeoGebra
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異分母分數減法
畫出對稱圖形
兩組對邊相等的四邊形
柱體建築師
球体的体积推导（优化版）
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線型函數圖形測驗
AREA
Reflectional symmetry of Triangular prism
拋物線6 包絡線法
自學練習_兩位數乘三位數
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Exponent
Means
Function Graph
Geometric Transformations
Fractions