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三角形數
Author:
LAI Wing Yan
GeoGebra
New Resources
画直线等分三角形的面积
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
拼砌四邊形
異分母分數減法
Discover Resources
Symmetric設計對稱圖案(一條對稱軸)
五下_分數除法(學生版)
觀察圖中有哪些角會相等
三角形三內角和為 180°
gltfh 複合圖形-圓柱與圓錐
Discover Topics
Hypergeometric Distribution
Solids or 3D Shapes
Root
Vectors 3D (Three-Dimensional)
Hyperbola