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鈍角和銳角
Author:
Tam Ho Yin
GeoGebra
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近似值：有效數字
中華民國國旗 (Codex╱2026.10.06)
sanjiaohanshu
算柱 (兩位數)
四邊形的特性
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數學作圖
sine graph 變換
翰林卷第10题
Pyth. theorem
【折纸】A4纸折四面体
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Subtraction
Dilation
Addition
Complex Numbers
Prism