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Author:
keith leung
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Tim Brzezinski
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GeoGebra
New Resources
小学资源收集
盈利與虧蝕
斐波那契螺旋弧线(表格法)
球体的截面
科赫雪花
Discover Resources
Angle at Centre
angles sum of a triangle 3
SIN伸縮平移
hkjhkjhkjh
拋物線2--焦點法
Discover Topics
Polygons
Continuity
Ellipse
Correlation
Kite