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三心:與三角形形狀的關係
Author:
葉宇笙
可以拉動頂點改變三角形,觀察三心位置變化。
GeoGebra
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GeoGebra数学资源(4-8年级)
比較五件物件的重量
第八周作业2
异形操场
折扣
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異分母的分數加減
zuiduan
正方形轉轉
No.1
餘弦函數圖形
Discover Topics
Quadratic Functions
Parabola
Triangles
Planes
Sphere