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圆锥与圆锥曲线
Author:
陈宜红
Topic:
Cone
,
Conic Sections
GeoGebra
New Resources
判斷球體
兩組對邊相等的四邊形
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
Discover Resources
畢氏定理動態證明(歐基里得，平形四邊形等面積，應用polyline)
角速度概念
Ex5C#4
四邊形外接正方形
earth
Discover Topics
Sequences and Series
Cosine
Intersection
Similarity Transformation or Similarity
Median Value