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三角形外心的位置
Author:
tan90
請按右下方的撥放鈕
GeoGebra
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【案例】2018年全国1卷理科12题
四邊形的特性
畫出對稱圖形
兩位數除以一位數（二）
画直线等分三角形的面积
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斜射光三角量測
GGB研習繪本
color
How to draw a triangle with ruler and compasses?
正方体的三视图
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Polygons
Congruence
Hypergeometric Distribution
Cuboid
Addition