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(時分秒)量度活動所用的時間(時分秒)
Author:
marcolee201314
GeoGebra
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科赫雪花
盈利與虧蝕
第八周作业
第三周作业效果演示
平行線的判定
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三角函數
同心圓和線段-2(最外圓大小固定)
Problem1:(md+me+mf)/(ad+be+cf)=a
B4 4-1 平行線性質
頂、棱與面
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Difference and Slope
Combinatorics
Fractions
Multiplication
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