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多边形旋
Author:
赵林
GeoGebra
New Resources
判斷球體
兩組對邊相等和有直角的四邊形
拼砌四邊形
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
Discover Resources
鏡射
學習單：三角形面積
林昌翰 拋物面鏡
角的介紹 | Introduction to Angles
平方求和V 庄皮春 (Pi-Chun Chuang)
Discover Topics
Limits
Differential Equation
Plane Figures or Shapes
Scalene Triangles
Right Triangles