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角内切圆
Author:
GeoGebra Institute of WuXi
位似指令的应用
GeoGebra
New Resources
四邊形的特性
兩組對邊相等的四邊形
拼砌四邊形
異分母分數減法
柱體建築師
Discover Resources
優良作品5(沛綺)
Prism
熊大
Copy of 包含除法（1 ÷分數）
congruent triangle2_provided by Mr Yeung Kar Chun
Discover Topics
Pie Chart or Circle Chart
Diagrams
Plane Figures or Shapes
Limits
Square