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練習 - 逆時針旋轉（三角形）
Author:
Lau Sir
Topic:
Triangles
GeoGebra
New Resources
錐體建築師
四邉形 (四年級) 教師版
柱體建築師
兩位數除以一位數（一）
算柱 (兩位數)
Discover Resources
體積公式參考
test02
內外切圓性質
封閉區域著色
整式乘法-平方差公式
Discover Topics
Cuboid
Algebra
Square
Subtraction
Isosceles Triangles