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Author:
lamyc
GeoGebra
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三位數除以一位數（一）
球體建築師
【案例】2018年全国1卷理科12题
四邊形的特性
兩組對邊相等和有直角的四邊形
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Escher 階梯 (Penrose Stair)
中垂線
三角函數的週期變化
Geometry: Angles Sum of Triangle (幾何：三角形內角和)
求公切線段長
Discover Topics
Curve Sketching
Arithmetic Mean
Continuity
Geometric Transformations
Median Line