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Author:
少平 朱
GeoGebra
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斐波那契螺旋弧线（表格法-可动态调节）
常见四边形是否是双心四边形
盈利與虧蝕
第八周作业2
异形操场
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正方變十字
時間參數跳躍函數
CLOCK
gjh-h02-01 歐幾里德的畢氏證明
堆垛
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Coordinates
Special Points
LCM and GCD
Statistics
Dilation