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固定周界的長方形面積變化
Author:
GeoGebra Institute of Hong Kong
Topic:
Area
,
Perimeter
,
Square
GeoGebra
New Resources
四邊形的特性
三位數除以一位數（二）
錐體建築師
兩位數加法
兩位數除以一位數（二）
Discover Resources
Arcs and Angles at Centre/ Circumference 弧、圓心角與圓周角
涌动
Ext angle cyclic quad
Interesting Geometric Theorem
固定三角形的條件−題5的副本
Discover Topics
Combinatorics
Right Triangles
Similar Triangles
Integers
Conic Sections