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polygon(first upload)
Author:
mingyi
GeoGebra
New Resources
兩位數除以一位數（一）
柱體建築師
兩組對邊相等的四邊形
兩位數加法
四邉形 (四年級) 教師版
Discover Resources
柏拉圖宇宙模型
圓底三角形截面
兩圓內外公切線
P6 圓周02B
圓形移動面積
Discover Topics
Arithmetic
Subtraction
Symmetry
Parabola
Variance