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圆锥曲线折纸操作题（教材案例）
Author:
蔡永志
Topic:
Conic Sections
,
Ellipse
,
Hyperbola
GeoGebra
New Resources
柱體建築師
兩組對邊相等和有直角的四邊形
畫出對稱圖形
找出對稱軸
兩位數除以一位數（一）
Discover Resources
Volume_Section
認識函數(表格形式練習)
基礎作圖1
橢圓軌跡
seven-eighths sphere 八分之七球面
Discover Topics
Rhombus
Fractal Geometry
Isosceles Triangles
Pyramid
Quadratic Equations