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对于两个图形若其中一个图形可以通过放大或缩小(放缩变换)得到另一个图形,则称这两个图形为相似形.相似三角形有许多性质,如:我们把相似三角形对应边的比称为这两个相似三角形的相似比,那么相似三角形的周长比等于相似比,相似三角形的面积比等于相似比的平方等.与相似三角形有关的中考试题往往综合性、技巧性较强,需要考生综合分析并熟
For two graphics If one of the graphics can be enlarged or reduced (scaled) to get another graphic, then the two graphics are similar shapes. Similar to the triangle has many properties, such as: We compare the similarity of similar triangles edge Is the similarity ratio of the two similar triangles, then the similarity of the circumference of the similar triangles is equal to the similarity ratio, and the area ratio of the similar triangles is equal to the square of the similarity ratio, etc. The middle exam questions related to similar triangles tend to be comprehensive and highly technical, Candidates a comprehensive analysis and cooked