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4.1 作一角等于已知角
Autor:
郑凯耀
,
Gianluca Occhetta
Tema:
Ángulos
Given an angle at a point A, and given a ray emanating from a point B, construct an angle at В equal to the angle at A (par = 4). 3 circles + 1 line = 4 steps.
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z`]]
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pt quiz (4)
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