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重心
Author:
cherry910502
GeoGebra
New Resources
異分母分數減法
【案例】2018年全国1卷理科12题
兩位數加法
兩組對邊相等的四邊形
四邊形的特性
Discover Resources
中空柱體
中一︰全等圖形（平移、旋轉、反射）
選擇合適的「中間人」
gjh-f03-00 司乃耳定律
Twghmkc_算柱
Discover Topics
Arithmetic Mean
Functions
Vectors
General Quadrilateral
Optimization Problems