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Andy_solution
Author:
bridan.wang
GeoGebra
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平行線的判定
GeoGebra数学资源(4-8年级)
中华人民共和国国旗
盈利與虧蝕
比較五件物件的重量
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圓內接四邊形 ABCD ...,求 sinθ=?
平面向量的三點共線定理
(006)80102
答重庆杨志友椭圆的定义
矩形的極式
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Parallelogram
Sequences and Series
Constructions
Matrices
Pythagoras or Pythagorean Theorem