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正4正8黏合
Author:
Wu Xiao-Ren
GeoGebra
New Resources
錐體建築師
画直线等分三角形的面积
四邉形 (四年級) 教師版
球體建築師
【案例】2018年全国1卷理科12题
Discover Resources
x^4 vs. x^2
尋找三角形的內切圓
S3 Ex4.3 Q05(3D圖)
序列（圆内弦）
三角形点阵
Discover Topics
Area
Percentages
Symmetry
Correlation
Similar Triangles