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Internal tangent

Author:jaycheung2016plk

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柱體建築師
找出對稱軸
球体的体积推导（优化版）
四邉形 (四年級) 教師版
三位數除以一位數（一）

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商高定理\水
拋物線
探索三角形SSS全等性質
垂直線的斜率_hui sir
四次函數圖形觀察

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Geometric Transformations
Perimeter
Quadrilaterals
Pythagoras or Pythagorean Theorem
Linear Functions

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