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折扣 例5
Author:
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
拼砌四邊形
Nested spiral octagon
判斷球體
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
Discover Resources
利用对称求线段和最值（移动端）
三角形數
創作對稱圖形 LEVEL 4
相位角、頻率
正方形穿越
Discover Topics
Sequences and Series
Plane Figures or Shapes
Straight Lines
Arithmetic
Diagrams