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No.18
Author:
Billy Cheung
GeoGebra
New Resources
漂亮的摇摆曲线
探究三角形的全等條件
【案例】2018年全国1卷理科12题
常见四边形是否是双心四边形
祖冲之的期望：内棋与外棋
Discover Resources
Projection
deductive geometry
圓錐曲線截痕 to 定義式
两平面夹角
餘數處理2
Discover Topics
Derivative
Linear Regression
Parallelogram
Geometric Mean
Difference and Slope