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圓與切線
Author:
李春培
圓與切線
GeoGebra
New Resources
找出對稱軸
第八周作业
拼砌四邊形
柱體建築師
兩組對邊相等和有直角的四邊形
Discover Resources
testing
Copy of 閱讀鐘面及數字鐘（時和分）
滚动的三角形
三角形全等的理由 – 題3的副本
圓錐曲線Conic Section
Discover Topics
Parabola
Mathematics
Subtraction
Translation
Multiplication