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角平分線性質
Author:
Chang Hui Fang
GeoGebra
New Resources
【案例】2013年安徽高考15题
拼砌四邊形
三位數除以一位數（二）
球體建築師
第八周作业
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同旁內角
多邊形的伸縮
勝者即正義
Copy of 閱讀鐘面及數字鐘（時和分）
GGB 案例分享
Discover Topics
Solids or 3D Shapes
Cone
Parallelogram
Trapezoid
Circumcircle or Circumscribed Circle