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正方形和長方形有甚麼特性？
Author:
Ken Cheung
,
Anthony OR 柯志明
Topic:
Rectangle
,
Square
Eng version:
http://ggbtu.be/m79823
GeoGebra
New Resources
正方形雪花图案
探究三角形的全等條件
垂直線的斜率
第八周作业3
科氏力 (Coriolis Force)
Discover Resources
範例：自製工具「格線」
y=(x-a)²的圖形
excenter of triangle
曲柄滑塊模擬
函數交點
Discover Topics
Expected Value
Limits
Surface
Cosine
Symmetry