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直角梯形
Author:
Tse Sir
GeoGebra
New Resources
三位數除以一位數（一）
兩位數加法
錐體建築師
三位數除以一位數（二）
直角坐標平面上的旋轉變換
Discover Resources
斜拋運動
斜射光三角量測
國旗製作
Demo
圓柱(可改底面圓半徑、柱高)
Discover Topics
Ellipse
Prism
Vectors 2D (Two-Dimensional)
Scalene Triangles
Pythagoras or Pythagorean Theorem