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trapezium
Author:
iedc
GeoGebra
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画直线等分三角形的面积
球体的体积推导
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
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尺規作圖找平方根點(以根號2為例)
正六面體摺疊
角定義
All in one (Centres of triangle)
翰林數學_2下_CH3-2_ASA作圖
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Ratios
Similar Triangles
Symmetry
Dilation
Rectangle