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Congruent (SSS)4
Author:
Ricky Chan
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随机三角形背景
正方形折纸减去两角
繪畫長方形
長方形的周界與長和闊的關係 (學生版)
GeoGebra创建的小游戏集
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過圓內一點最短弦
動態面積展示
HKCEE 2009 Q17
test
Copy of fluid mechanics
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Sequences and Series
Percentages
Exponential Functions
Curve Sketching
Tangent Line or Tangent