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area and parameter of triangle
Author:
Lau Chin Ho
GeoGebra
New Resources
斐波那契螺旋弧线（表格法-可动态调节）
中华人民共和国国旗
双心四边形
第八周作业1
龙形曲线-分形龙2
Discover Resources
Angle at Centre Twice Angle at Circumference
圓周 (圖形B)
畢氏樹
GGBstar
雪櫃裏的食物
Discover Topics
Symmetry
Percentages
Cosine
Arithmetic
Linear Functions