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符成岗
Author:
符成岗
GeoGebra
New Resources
算柱 (兩位數)
小数 的副本
四邉形 (四年級) 教師版
近似值：有效數字
拼砌四邊形
Discover Resources
中點軌跡
纏繞SEQUENCE任意多邊版2
Gaussian Heptagon construction
奠基
Love
Discover Topics
Optimization Problems
Rotation
Arithmetic Mean
Right Triangles
Matrices