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包絡線：橢圓
Author:
羅驥韡 (Pegasus Roe)
Topic:
Ellipse
GeoGebra
New Resources
兩位數除以一位數（一）
四邉形 (四年級) 教師版
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
直角坐標平面上的旋轉變換
Discover Resources
Square pyramid
一元二次方程求根公式
翰林B4講p171_類8
百分數：折扣 / 賺賠
勾股定理
S5R1L4圆内迭代反射——朱老师
Discover Topics
Median Line
Logarithm
Logic
Area
Prism