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椭圆规
Author:
蔡永志
Topic:
Conic Sections
椭圆规
GeoGebra
New Resources
四邊形的特性
柱體建築師
三位數除以一位數（二）
【案例】2013年安徽高考15题
球体的体积推导（优化版）
Discover Resources
畢氏樹
Equal chords cut off equal arcs in a circle
弦心距比較
橢圓軌跡
放射狀圖形(1)
Discover Topics
Triangles
Exponential Functions
Arithmetic Operations
Differential Calculus
Similarity Transformation or Similarity