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三角四星
Author:
吳秉沂
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
畫出對稱圖形
兩位數除以一位數（一）
三位數除以一位數（二）
兩組對邊相等的四邊形
Discover Resources
離心率與圓錐曲線
Spotlight 探射燈
Quiz on Mixed Arithmetic Operations of Positive Integers 正整數四則混合運算：測驗
面積4
正六邊形串珠
Discover Topics
Real Numbers
Root
Square
Rhombus
Scatter Plot