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梯形

Author:: Chan Ting Hin

Topic:: Trapezoid

GeoGebra Applet

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General Quadrilateral
Kite
Parallelogram
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花瓶
切線性質
坐標網格的複數映射（次方）
robot-foot01
函数作图工具的副本

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Distributions
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General Quadrilateral

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