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包絡線：橢圓
Author:
羅驥韡 (Pegasus Roe)
Topic:
Ellipse
GeoGebra
New Resources
球體建築師
【案例】圆柱体内放置一个大球六个小球
兩位數加法
三位數除以一位數（一）
兩組對邊相等的四邊形
Discover Resources
Reflection
軌跡觀察---圓及正三角形上線段中點
n星角
Dodecahedron
長方形的對稱軸
Discover Topics
Bar Chart or Bar Graph
Conditional Probability
Variance
Natural Numbers
Derivative