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畫三角形 題1d 的複本
Author:
Tony Cheng
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
找出對稱軸
拼砌四邊形
錐體建築師
三位數除以一位數（二）
直角坐標平面上的旋轉變換
Discover Resources
平行四邊形面積
角平分線作圖1213
兩線段和圓的關係
二元一次不等式的解
-3/2 ≤ cosα + cosβ + cosγ ≤ 3
Discover Topics
Dilation
Parallelogram
Hyperbola
Scalene Triangles
Area