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Dandelin双球证明圆锥曲线之抛物线
Author:
平旭洋
Topic:
Conic Sections
GeoGebra
New Resources
找出對稱軸
四邊形的特性
球體建築師
兩位數除以一位數（二）
判斷球體
Discover Resources
君子球
Parallel lines
旋轉+伸縮正多邊形
P4 多邊形周界01 測試
廣義三角：sin, cos
Discover Topics
Pie Chart or Circle Chart
Tangent Function
Correlation
Planes
Functions