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周长相等，正方形，长方形和正三角形，圆面积大小比较
Author:
冯圣军
Topic:
Square
,
Triangles
GeoGebra
New Resources
三位數除以一位數（二）
直角坐標平面上的旋轉變換
算柱 (兩位數)
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
Discover Resources
Fraction to Decimal
橢圓軌跡
Copy of 齊來製作對稱圖
更相减损术几何表示
Copy of 分數加法
Discover Topics
Circumcircle or Circumscribed Circle
Intersection
Rhombus
Interest Calculation
Line Segment