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孟氏定理 (Menelaus' theorem)
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
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異分母分數減法
判斷球體
【案例】2018年全国1卷理科12题
找出對稱軸
兩組對邊相等的四邊形
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GGB-BOOK
畫方格
单位圆画三角函数图像
P5三角形的面積
正方体展开图的副本
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Percentages
Straight Lines
Median Line
Geometry