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疊代
Author:
hnlu
GeoGebra
New Resources
長方體平面投影 (Codex版)
四邉形 (四年級) 教師版
美國國旗 (Codex 版)
判斷球體
Nested spiral octagon
Discover Resources
龍騰4_1-1課例5
包含除法（1 ÷分數）
三角形的邊長關係
積分
重疊法
Discover Topics
Logic
Perimeter
Planes
Tangent Line or Tangent
Surface