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直径是圆中最重要的衍生概念,有着极其丰富的内涵.在求解一类有关圆的问题时,若能构造直径并利用直径的性质解决,能轻松获解.
Diameter is the most important derivative concept in the circle, with extremely rich connotations. When solving a circular problem, if diameter can be constructed and solved by the nature of the diameter, it can be easily solved.