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angles sum of a triangle 2
Author:
LAM YU SANG
GeoGebra
New Resources
斐波那契螺旋弧线(表格法)
活动三:应用性质
比較五件物件的重量
第三周作业效果演示
第八周作业
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相似形的題目
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Similar Triangles
錯角---水平平行綫
橢圓的副本
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Reflection
Secant Line or Secant
Planes
Constructions
Linear Programming or Linear Optimization