由于在等腰三角形中,两底角相等,且顶角与底角之间具有确定的数量关系,求与等腰三角形有关的角时,很多时候可以通过巧妙地设未知数借助方程求解,达到化难为易的目的.1.灵活设元,用同一元表示不同的角 As in the isosceles triangle, the two bottom corners are equal, and the top corner and the bottom corner have a certain quantitative relationship between the isosceles triangle to find the corners, many times can be solved by solving the equation by skillfully setting the unknown to achieve Difficult for the purpose of easy .1 flexible set yuan, with the same dollar that different angles