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平行四邊形之變奏I
Author:
周桂名
Topic:
Parallelogram
拉動一下C、D兩點，觀察一下！
GeoGebra
New Resources
直線的斜率
漂亮的摇摆曲线
多邊形的面積
第八周作业
垂直線的斜率
Discover Resources
Bearings 方位
nozzle position_Alex0417
蝴蝶線ggb
簡單動畫
Example 4
Discover Topics
Parametric Curves
Straight Lines
Definite Integral
Median Line
Triangles