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平行线的判定与性质是研究初中几何基础。而初学几何的初一学生往往对平行线的判定与性质认识不足,导致概念模糊,容易混淆判定与性质的区别和联系。因此,学习平行线的判定与性质时应注意以下三点:
The determination and nature of parallel lines are the basis for studying junior high school geometry. The first-year students of beginner geometry often lack understanding of the nature and nature of the parallel lines, which results in a vague concept and makes it easy to confuse the differences and relations between judgment and nature. Therefore, the following three points should be taken into account when learning the nature and nature of parallel lines: