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三角函数线
Author:
冯伟冀
Topic:
Trigonometry
GeoGebra
New Resources
漂亮的摇摆曲线
三位數除以一位數（二）
圓周公式的應用
兩位數除以一位數（一）
平行線的斜率
Discover Resources
Fractal Spirograph (Fractal Roulette)
圈柱
六年級_正方體截面
折線1
作業一
等角对等边
Discover Topics
Parallelogram
Cube
Natural Numbers
Conic Sections
Definite Integral