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NestedSquare_spreadsheet
Author:
Peng-Jen Lai 賴鵬仁
GeoGebra
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兩位數加法
【案例】2013年安徽高考15题
拼砌四邊形
兩組對邊相等和有直角的四邊形
判斷球體
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gjh-e01-02 未知數邊長的長方形
菱形的特性
橢圓軌跡05
正n邊形內接縮小正n邊形
GeoGebra 動畫開關按鈕製作的副本
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Similarity Transformation or Similarity
Step Functions
Right Triangles
Angles
Special Points