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平行四邊形
Author:
Yip Chi Wai
Topic:
Parallelogram
GeoGebra
New Resources
三位數除以一位數（一）
球体的体积推导
三位數除以一位數（二）
【案例】2018年全国1卷理科12题
柱體建築師
Discover Resources
七巧板（tangram）
餘弦定理
三角形及多邊形
folding aeroplane
硬幣繞多邊形面積
Discover Topics
Bar Chart or Bar Graph
Geometric Mean
Isosceles Triangles
Scatter Plot
Vectors 2D (Two-Dimensional)