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SWC introduce orthocentre
Author:
hksiusir
GeoGebra
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活动三：应用性质
常见四边形是否是双心四边形
第三周作业效果演示
异形操场
折扣
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兩外切圓之外公切線作圖法
二元一次聯立方程式
軌跡四︰移動點與一固定直線保持固定距離(兩平行線)
(003)80201辛宇婕
S3 Ch4.3 例4.6a 三視圖(3D圖)
Discover Topics
Function Graph
Orthocenter
General Quadrilateral
Subtraction
Pythagoras or Pythagorean Theorem