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截痕
Author:
Peter
GeoGebra
New Resources
拼砌四邊形
判斷球體
兩位數加法
兩組對邊相等的四邊形
画直线等分三角形的面积
Discover Resources
Ratio of angles at the centre and the length of the arcs.
牛頓定理二
Similar triangles inscribed iteration400
棒形圖2
手拉手模型
Discover Topics
Isosceles Triangles
Complex Numbers
Arithmetic Operations
Quadrilaterals
Rhombus