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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
錐體建築師
兩組對邊相等和有直角的四邊形
畫出對稱圖形
兩位數加法
找出對稱軸
Discover Resources
ex 3
二次函數（第三階段）
Locus
橢圓1-同心圓法
活工(三)Q2
Discover Topics
Polygons
Geometry
Statistics
Right Triangles
Bar Chart or Bar Graph