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平面族
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
球體建築師
拼砌四邊形
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
Discover Resources
Dilation of area
旋轉動畫
探究平行四邊形面積(2)
P53_3b
同位角__垂直平行綫
Discover Topics
Arithmetic Operations
Natural Numbers
Line Segment
Linear Programming or Linear Optimization
Area