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Is there a big problem with single move mathematics?
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It is not much different from the college entrance examination questions. Generally, the minor item is 5 or 10, and the major item is 12.

Review according to the college entrance examination questions. In recent years, the exams for solving solid geometry problems have the following points:

1. the first question: parallel lines and planes, vertical lines and planes, vertical planes; Too many vertical tests;

2. Second question: dihedral angle can be solved by space vector method.

Special attention: the use of vertical lines and planes, as well as the handling of folded graphics!