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perimeter of rectangle
Author:
chh127245
,
Duane Habecker
perimeter of rectangle
GeoGebra
New Resources
兩組對邊相等的四邊形
四邊形的特性
兩位數除以一位數（一）
【案例】2013年安徽高考15题
第八周作业
Discover Resources
周考最后一题
Fermat's Spiral
我的傑作
切割正十二面體(平)
探索三角形外角定理
Discover Topics
Solids or 3D Shapes
Cylinder
Quadrilaterals
Arithmetic Mean
Tangent Function