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三節棍問題
Author:
min
GeoGebra
New Resources
拼砌四邊形
畫出對稱圖形
判斷球體
兩位數除以一位數（二）
画直线等分三角形的面积
Discover Resources
均分除法（整數÷整數）
Relationships between chords and their distances from centre
corresponding angles
假的龍珠
folding paper by Mr LO WY
Discover Topics
Variance
Right Triangles
Plane Figures or Shapes
Multiplication
Cone