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圓周 (圖形H) 的複本
Author:
Michael Ma
,
Keith Ko
移動右圖中的紅線到左方虛線,就知道它是相等於左圖的哪條線。
GeoGebra
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Nested spiral octagon
兩組對邊相等的四邊形
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國旗 (Claude 版)
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宬風老師的GGB教師研習教材
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拼圖2
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Parallelogram
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Differential Calculus
Random Variables
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