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Heron formula
Author:
ralphchen
GeoGebra
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平行線的判定
折扣
龙形曲线-分形龙2
龙形曲线-分形龙
圓的基本性質
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錐體建築師 1
優良作品6
長方體的體積
周界2
整式乘法-平方差公式
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Cone
Line Segment
Histogram
Mathematics
Statistics