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2平行四邊形面積
Author:
maths_p5
GeoGebra
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球體建築師
異分母分數減法
兩組對邊相等和有直角的四邊形
兩位數除以一位數(二)
拼砌四邊形
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GGB分解的按鈕設計
二元一次方程式及其解的意義
面积解题
两角差的正切公式的证明
跳棋棋盘
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Sphere
LCM and GCD
Mathematics
Reflection
Means