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圆面积公式推导
Author:
淑玉
,
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
兩位數加法
柱體建築師
畫出對稱圖形
三位數除以一位數（一）
兩組對邊相等的四邊形
Discover Resources
y=mx+k
三個交點
九點圓定理
伸展收縮變換
Sine Wave 3D
Discover Topics
Root
Geometric Transformations
Ratios
Percentages
Pie Chart or Circle Chart