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-1 ≤ cosA cosB cosC ≤ 1/8
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
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四邉形 (四年級) 教師版
柱體建築師
【案例】2018年全国1卷理科12题
異分母分數減法
拼砌四邊形
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Triangular Prism Net
vbcvbcvbcvbcvbcvcv
Angle between Lateral Faces 1
Ex5D#2
累積頻數多邊形及累積頻數曲線
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Geometry
Integers
Geometric Mean
Arithmetic Operations
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