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翰林數學_2下_CH4-2_平行四邊形性質
Author:
翰林數學
GeoGebra
New Resources
Fibonacci Clock
Nested spiral octagon
伊朗國旗 (Codex╱2026.10.07)
畫出對稱圖形
近似值：有效數字
Discover Resources
小數試用
平行線
三角形的三角和及外心、內心圓
因式分解(十字相乘法)
Ex5D#5
Discover Topics
Random Variables
Parametric Curves
Arithmetic Mean
Rotation
Pyramid