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达芬奇椭圆仪
Author:
蔡永志
Topic:
Conic Sections
达芬奇椭圆仪
GeoGebra
New Resources
三位數除以一位數(一)
兩組對邊相等的四邊形
兩位數除以一位數(一)
異分母分數減法
判斷球體
Discover Resources
對稱求最小
面積
迭代多角星
六上:圆的面积公式推导
数一数这是几边形
Discover Topics
Right Triangles
Plane Figures or Shapes
Combinatorics
Logic
Standard Deviation