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angle 123
Author:
zhihuai1982
GeoGebra
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錐體建築師
算柱 (兩位數)
兩位數除以一位數（二）
三位數除以一位數（一）
兩組對邊相等的四邊形
Discover Resources
tan(α) tan(β) = ?
test
平移
STATS Unit.2
斐波那契螺旋弧线（表格法-可动态调节）
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Polygons
Geometry
Orthocenter
Cosine
Vectors 2D (Two-Dimensional)