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正方形的邊長和周界
Author:
Anthony Or 柯志明
Topic:
Perimeter
GeoGebra
New Resources
美國國旗 (Codex, 2026.10.06)
近似值：有效數字
畫出對稱圖形
算柱 (兩位數)
長方體平面投影 (Codex版)
Discover Resources
圓和弦圓和弦
test
太空版憤怒鳥
-1/8 ≤ cosα cosβ cosγ ≤ 1
Sonia and Julie
Discover Topics
Constructions
Centroid or Barycenter
Intersection
Fractal Geometry
Polynomial Functions