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題二
Author:
GeoGebra Institute of Hong Kong
Topic:
Area
GeoGebra
New Resources
兩組對邊相等的四邊形
三位數除以一位數（一）
四邉形 (四年級) 教師版
第八周作业
兩位數加法
Discover Resources
二次函數
反演(Inversion)
中間人星星
Geometry: Types of Angles 2 (幾何：角的種類 2)
一个函数的零点个数.许兴华数学
Discover Topics
Quadrilaterals
Right Triangles
Binomial Distribution
Scalene Triangles
Constructions