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angle 123
Author:
zhihuai1982
GeoGebra
New Resources
画直线等分三角形的面积
拼砌四邊形
兩組對邊相等的四邊形
三位數除以一位數(二)
兩位數除以一位數(一)
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echen say
Properties of a Rectangle
circle
疊代三角形
線性規劃
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Statistics
Tree Diagrams
Square
Geometry
Power Functions