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優良作品3(薇如)
Author:
Ching-Hui Chou
GeoGebra
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画直线等分三角形的面积
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
柱體建築師
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五星形的頂角
图形
圓周率的應用 題C
Locus (Segment)
勾股定理：射影无字证明
Discover Topics
Sine
Tangent Line or Tangent
Upper and Lower Sum or Riemann Sum
Rotation
Coordinates