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垂線斜率_1
Author:
Reinhold Yen
GeoGebra
New Resources
盈利與虧蝕
比較五件物件的重量
双心四边形
常见四边形是否是双心四边形
科氏力 (Coriolis Force)
Discover Resources
三角形與邊上一點求正三角形
圆锥的侧面展开图3D
立體圖形
正方体的十一种展开图
gegebra学习过程
Discover Topics
Parabola
Centroid or Barycenter
Curve Sketching
Secant Line or Secant
Rotation