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3.EnvelopeCurveOfConicSection
Author:
Shun-Sheng Su
3.EnvelopeCurveOfConicSection
GeoGebra
New Resources
拼砌四邊形
兩位數除以一位數（一）
柱體建築師
三位數除以一位數（二）
兩位數加法
Discover Resources
正六面體
兩圓及交弦
小船平移2
一次函数的副本
二次函数图像描点法
Discover Topics
Frequency Distribution
Triangles
Random Variables
Ratios
Tree Diagrams