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一些问题,若能巧妙构造出辅助圆,往往可迅速沟通题设与结论之间的关系,从而使问题得解,起到了铺路搭桥的作用.
Some problems, if they can skillfully construct an auxiliary circle, can often quickly communicate the relationship between the question design and the conclusion, so as to solve the problem and play a role in paving the way.