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地毯
Author:
赵林
GeoGebra
New Resources
兩位數除以一位數(一)
【案例】2018年全国1卷理科12题
球体的体积推导(优化版)
四邊形的特性
【案例】2013年安徽高考15题
Discover Resources
Area of Trapezium
Escher 階梯 (Penrose Stair)
軌跡教學
星星
方程001
Discover Topics
Congruence
Curve Sketching
Difference and Slope
Root
Bar Chart or Bar Graph