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題 2
Author:
GeoGebra Institute of Hong Kong
Topic:
Area
,
Polygons
計算下圖的面積。
GeoGebra
New Resources
異分母分數減法
画直线等分三角形的面积
四邊形的特性
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
Discover Resources
Perigal's Dissection
Congruent Triangles
高长乐
GGB DAY3
圆之吻（Apollonius circles）
Discover Topics
Right Triangles
Rhombus
Rotation
Coordinates
Cone