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robot-foot01
Author:
hann99
GeoGebra
New Resources
平行線的判定
椭圆内切圆链
龙形曲线-分形龙2
正方形雪花图案
撒针估算面积实验
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VV圓
謝爾賓斯基三角形(Sierpinsky)
切線段等長
國旗
两个经典不等式
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Percentages
Diagrams
Calculus
Scatter Plot
Congruence