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Orthocentre
Author:
Big Lee
GeoGebra
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兩位數加法
近似值:有效數字
【案例】2018年全国1卷理科12题
柱體建築師
拼砌四邊形
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正四面體
折射的現象
雨刷中的數學
三角格紋
圆内弦(迭代)
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Orthocenter
Division
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Prism
Straight Lines