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動國旗
Author:
張丰耘
GeoGebra
New Resources
Nested spiral octagon
近似值：有效數字
Claude 解幾何題
美國國旗 (Codex 版)
四邊形的特性
Discover Resources
扇形滾動基測試題
前景背景
路徑三動畫
國徽
跳動的愛心－平面
Discover Topics
Constructions
Cube
Right Triangles
Rotation
Interest Calculation