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折叠、轴对称问题的解决,离不开对折痕、对称轴的研究.应用折叠前后的图形关于折痕成轴对称关系,轴对称图形之间的全等,所有对应点的连线被折痕垂直平分,对应线段和对应角相等等知识来解决问题.如果折痕(对称轴)是固定不动的题型,考生相对容易解决.如果折痕(对称轴)是运动的题型,可以归类为折痕(对称轴)平移、旋转,折叠后的图形随着折痕(对称轴)的变化而发生运动改变,解决这类题学生
Folding, Axisymmetric problem can not be separated from the research on the crease and symmetry axis.Application The shape of the crease before and after folding is symmetrical about the crease, the congruence between the axisymmetric graphics, the crease of the connection of all the corresponding points Vertical bisectors, the corresponding line segments and the corresponding angle equal knowledge to solve the problem.If the crease (axis of symmetry) is a fixed question, the candidate is relatively easy to solve.If the crease (axis of symmetry) is the type of exercise, you can go Class for the crease (axis of symmetry) translation, rotation, folding the graphics with the crease (axis of symmetry) change and exercise changes to address such questions students