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凸透镜成像
Author:
软 微
GeoGebra
New Resources
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
美國國旗 (Codex 版)
拼砌四邊形
近似值：有效數字
Discover Resources
樣本大小與抽樣誤差
四邊形四個西姆松圓交於九點心
摩天輪
橢圓面積的計算
三角形分形
Discover Topics
Parametric Curves
Symmetry
Differential Equation
Differential Calculus
Frequency Distribution