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定周长的正多边形面积变化规律（含圆）
Author:
张英华
Topic:
Area
GeoGebra
New Resources
第八周作业
四邉形 (四年級) 教師版
國旗 (作圖步驟直接餵給 Claude)
AI 訓練教室
長方體平面投影 (Codex版)
Discover Resources
等差數列的和
zuiduan
Test
運用搬移方法找出平均數
七巧板的副本
Discover Topics
Rational Numbers
Vectors 2D (Two-Dimensional)
Geometric Mean
Probability
Parabola