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角的大小比較
Author:
李宬風
GeoGebra
New Resources
兩位數除以一位數（一）
兩位數除以一位數（二）
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
拼砌四邊形
Discover Resources
立體幾何
tan(α) tan(β) = ?
平行與角度
Multiplication of Polynomials 1(多項式的乘法 1)
完全图
Discover Topics
Vectors 2D (Two-Dimensional)
Addition
Constructions
Quadrilaterals
Means