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三角形三边的关系
Author:
杨秀芬
GeoGebra
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第八周作业1
正方形雪花图案
椭圆内切圆链
盈利與虧蝕
GeoGebra数学资源(4-8年级)
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給三角形求正三角形
模擬3D---切割與展開
兩位小數GAME
滑桿2-3
特殊時鐘模擬
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Trigonometry
Planes
Integers
Histogram
Cylinder