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梯形
Author:
Chan Ting Hin
Topic:
Trapezium
GeoGebra
New Resources
兩組對邊相等的四邊形
拼砌四邊形
三位數除以一位數（一）
小数 的副本
兩組對邊相等和有直角的四邊形
Discover Resources
斜線圖的畫法
中點軌跡(動點在兩圓上)
圓上的角任務(三): 提示卡
test1
勒洛三角形任意點P軌跡
Discover Topics
Division
Tree Diagrams
Triangles
Arithmetic Mean
Sequences and Series