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劉虹圻 垂心
Author:
呂麗珠
Topic:
Orthocenter
GeoGebra
New Resources
【案例】圆柱体内放置一个大球六个小球
球体的体积推导（优化版）
兩位數除以一位數（二）
兩位數加法
找出對稱軸
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全等三角形
翰林B4課p227_9
學測指考題
Area of Triangle
線性變換矩陣（二階）的副本
Discover Topics
Plane Figures or Shapes
Coordinates
Tangent Line or Tangent
Parabola
Logarithmic Functions