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三角形的三线
Author:
Xiaoting Yuan
Topic:
Triangles
GeoGebra
New Resources
判斷球體
兩位數除以一位數（一）
柱體建築師
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
Discover Resources
平行四邊形變奏II
三角形重心軌跡(動點在三圓上)
點與圓的關係
必修二P156二面角与平面的法向量
加减法练习
Discover Topics
Statistical Characteristics
Normal Distribution
Hypergeometric Distribution
Integral Calculus
Calculus