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題A至E
Author:
Tse Sir
題A至E
GeoGebra
New Resources
柱體建築師
画直线等分三角形的面积
拼砌四邊形
兩位數加法
兩位數除以一位數（二）
Discover Resources
正六面体分形
circle
Tangent to a curve at a point
極式：切線方向
旁心
Discover Topics
Boxplot
Differential Calculus
Similar Triangles
Vectors 2D (Two-Dimensional)
Vectors