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黄金螺线与向日葵
Author:
lansesorry
GeoGebra
New Resources
科赫雪花
折扣
双心四边形
盈利與虧蝕
异形操场
Discover Resources
複合形體的表面積(凸形)
gjh-e01-02 未知數邊長的長方形
學習單：平行四邊形面積
testing
翰林數學_1下_CH5-2_算術平均數與中位數與眾數
Discover Topics
Probability
Complex Numbers
Trapezoid
Cube
Symmetry