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达芬奇椭圆仪
Author:
蔡永志
Topic:
Conic Sections
达芬奇椭圆仪
GeoGebra
New Resources
兩組對邊相等的四邊形
找出對稱軸
算柱 (兩位數)
第八周作业
四邉形 (四年級) 教師版
Discover Resources
織布機織布機
ex 3
圖形的周界
小一
Slope of a tangent 切線斜率
Discover Topics
Polynomial Functions
Natural Numbers
Percentages
Parametric Curves
Vectors