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相似问题主要集中在三角形这一类图形中,关于三角形相似的判定、基本性质是我们需要细细认识的问题.在全面把握三角形的相似问题后,我们还要留意一下多边形的相似以及位似问题.这些问题都把握好了,关于相似问题你也就顺利过关啦!1.相似三角形的判定例1如图,△ABC中,点D、E分别是AB、AC的中点,下列结论不正确的是().A.BC=2DE B.△ADE~△ABC C.(AD)/(AE)=(AB)/(AC)D.S_(△ABC)=3S_(△ADE)解析根据三角形中A
Similar problems are mainly concentrated in the triangular graphics, the similarity of the triangle to determine the basic nature of the problem we need to be aware of. After a comprehensive grasp of the similarity of the triangle, we also pay attention to the polygon similarity and bit like .All these problems are grasped, you will pass the similar problem! 1. Judgment of Similar Triangle 1 As shown in Fig. △ ABC, the points D and E are the midpoints of AB and AC respectively. The following conclusions are not correct () ABC = 2DE B. △ ADE ~ △ ABC C. (AD) / (AE) = (AB) / (AC) D. S △ ABC = 3S △ ADE Analysis According to the triangle In A