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所有的拋物線都是相似!?
Author:
陳柄何
GeoGebra
New Resources
Icosahedron1
Parallelograms: Quick Investigation
Poorly Drawn Parallelograms 2
Poorly Drawn Parallelograms 3
alg2_05_05_01_applet_exp_flvs
Discover Resources
migrash malbeni
Are these ellipses?
de leon
My Life's Work
波紋の重ね合わせ
Discover Topics
Ellipse
Combinatorics
Rhombus
Geometry
Arithmetic Mean