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定周长的正多边形面积变化规律
Author:
张英华
Topic:
Area
GeoGebra
New Resources
兩位數加法
球體建築師
【案例】圆柱体内放置一个大球六个小球
【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
Discover Resources
多邊型面積趨近圓
任務4
會動的圖形
Control a, b and c in quadratic function
平行四邊形面積的副本
Discover Topics
Indefinite Integral
Matrices
Multiplication
Power Functions
Symmetry