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動態正方形(未完成)
Author:
李俊賢
Topic:
Square
GeoGebra
New Resources
三位數除以一位數（二）
畫出對稱圖形
兩組對邊相等和有直角的四邊形
第八周作业
判斷球體
Discover Resources
三角形五心與角度關係
[工具箱] 標示長度
solid of revolution
功課
圆面积公式推导
Discover Topics
Matrices
Rhombus
Logarithm
LCM and GCD
Rectangle