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Is this a prism 4
Author:
Shum Kwok Ching
GeoGebra
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拼砌四邊形
直角坐標平面上的旋轉變換
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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函數分割逼近
圓周角與圓心角之度數關係臆測（圓心在圓周角的外部）
滑动变阻器
正四面體變菱形12面體
加减乘除运输出题器
Discover Topics
Logarithm
Tangent Line or Tangent
Similar Triangles
Subtraction
Parabola