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GeoGebra Lesson
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二次函数的图象和性质3
Author:
小南
GeoGebra
New Resources
畫出對稱圖形
美國國旗 (Codex, 2026.10.06)
近似值：有效數字
Nested spiral octagon
三半圓間的相切圓(Codex╱2026.10.07)
Discover Resources
柱體建築師 1
給柱體一個名字 3
直線系
Gazing Cow Problem (c)
小正多边形在大正多边形内的滚动（边长不相等）
Discover Topics
Random Experiments
Probability
Similarity Transformation or Similarity
Area
Vectors 2D (Two-Dimensional)