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三角形
Author:
whtong
Topic:
Triangles
GeoGebra
New Resources
近似值：有效數字
Nested spiral octagon
四邉形 (四年級) 教師版
國旗 (作圖步驟直接餵給 Claude)
長方體平面投影 (Codex版)
Discover Resources
數值滑桿
perimeter
congruent activity
找规律（数阵与点阵）
同心六邊形
Discover Topics
Congruence
Coordinates
Quadrilaterals
Random Variables
Limits