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長方形
Author:
Yin Kelvin Wong
GeoGebra
New Resources
兩位數除以一位數（一）
拼砌四邊形
判斷球體
兩位數加法
兩組對邊相等和有直角的四邊形
Discover Resources
「相似三角形」任务2
畢氏定理
題四
手拉手模型
相反数 思考（教材第10页）
Discover Topics
Vectors 3D (Three-Dimensional)
Curve Sketching
Solids or 3D Shapes
Tangent Line or Tangent
Constructions