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B3C2-2例7-1
Author:
David HUNG
GeoGebra
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兩位數除以一位數（一）
兩組對邊相等的四邊形
三位數除以一位數（二）
算柱 (兩位數)
【案例】2018年全国1卷理科12题
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No.4
Cardioid: r=1-cosθ
MFS: Rebound 2
运动的全等三角形.许兴华数学
椭圆的定义
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Sphere
Continuity
Triangles
LCM and GCD
Upper and Lower Sum or Riemann Sum