等腰三角形是常见的特殊三角形,在解有关等腰三角形的题时,不少同学往往会出现一些错误.为了帮助同学们正确解题,现将这些错误归类剖析.一、忽视任意三角形三边之间的关系例1已知等腰三角形的两条边长分别为3,6,则它的周长是.错解根据等腰三角形的性质,得第三边 Isosceles triangle is a common special triangle, in the solution to the problem of isosceles triangle, many students often appear some mistakes.In order to help students solve the problem correctly, these errors are now classified analysis.One, ignore the arbitrary triangle Relationship between edges Example 1 Given the isosceles triangle with two sides of 3 and 6, respectively, the perimeter is 0. Deviating According to the nature of the isosceles triangle, the third side