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Author:陳隆期

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兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
四邉形 (四年級) 教師版
直角坐標平面上的旋轉變換
拼砌四邊形

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GeoGebra作圖─ＲＨＳ全等
外面有圓
拋物線
桁架圖解步驟
Illusion-若隐若现的白点

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Calculus
Vectors 3D (Three-Dimensional)
Pythagoras or Pythagorean Theorem
Similar Triangles
Equations

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