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Author:
GEOGEBRA啟
Topic:
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GeoGebra
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垂直線的斜率
常见四边形是否是双心四边形
直線的斜率
圓的基本性質
探究三角形的全等條件
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百分數:折扣、盈利與虧損
三角形全等的理由 – 題4
transformation_rotation
勾股定理:射影无字证明
翰林數學_1下_CH4_一元一次不等式解的圖示法
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Upper and Lower Sum or Riemann Sum
Geometric Distribution
Combinatorics
Vectors 3D (Three-Dimensional)
Isosceles Triangles