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外心的位置
Author:
謝定原
GeoGebra
New Resources
画直线等分三角形的面积
兩位數除以一位數(一)
兩位數加法
拼砌四邊形
柱體建築師
Discover Resources
過圓內一點與圓相切的圓
容積盒子
Area and Volume of a pentagonal prism(正五角棱柱的面積和體積)
滑杆的數字接力賽-平移旋轉三角形填滿四邊形(加邊框)
拋物線3-平行四邊形法
Discover Topics
Right Triangles
Coordinates
Equations
General Quadrilateral
Geometric Mean