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椭圆的定义
Author:
jjx01
Topic:
Conic Sections
,
Ellipse
GeoGebra
New Resources
四邉形 (四年級) 教師版
三位數除以一位數（一）
拼砌四邊形
兩位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
Discover Resources
探究平行四邊形面積(2)
勝者即正義
各種五邊形
Space-filling curve2
圆面积的推导-开普勒法
Discover Topics
Pythagoras or Pythagorean Theorem
Solids or 3D Shapes
Symmetry
Rhombus
Quadrilaterals