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梯形
Author:
Chan Ting Hin
Topic:
Trapezoid
GeoGebra
New Resources
拼砌四邊形
第八周作业
兩組對邊相等的四邊形
sanjiaohanshu
三位數除以一位數（一）
Discover Resources
ggb-fs-a3 用物件表示分數比例
Hypocycloid Wheel
Geometry: Angles Sum of Triangle (幾何：三角形內角和)
表面積
輪子轉動問題_求直徑和半徑
Discover Topics
Random Variables
Tangent Function
Trigonometric Functions
Upper and Lower Sum or Riemann Sum
Combinatorics