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chan ka fai
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GeoGebra
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【案例】2018年全国1卷理科12题
垂直線的斜率
科氏力 (Coriolis Force)
讀磅
斜率的值
Discover Resources
Symmetric設計對稱圖案(兩條對稱軸)
Circle123456789987654321
廣義角的代換(90度加減角度)
學習單：三角形面積
三角形的心
Discover Topics
Reflection
Planes
Straight Lines
Volume
Polynomial Functions