See the individual, find symmetry, fold the overlap along the axis, and rotate the center as well. If there is no symmetry, if you want to close it, don't forget to form an angle and count the closed surfaces. If it is not closed, it must be opened. Whether it is on or off, it is the same law of finding numbers. The same straight line, the same bending line, the straight bending line is divided into several parts, and the two lines alternate. A sum, also common, will repel each other, and the path will not be repeated. The same group of drawings, multi-faceted, ask what are the characteristics and options to judge.

Graphic reasoning technology

Problem-solving skills in graphic reorganization. Graphics in graphic reorganization are generally composed of several elements, and only one alternative graphic is composed of elements that constitute the theme image. It can only be questions that may change direction and position on the same plane. When solving problems, the methods of matching the front and back subgraphs, rotating without turning over, or seeking common ground while reserving differences are adopted.

Tips for solving problems in positions. Generally speaking, the number of elements in a set of graphics is the same item, but the difference is that the position of local elements has changed. At this time, the problem is solved from the perspective of position, and the types of position changes are divided into translation, rotation, turnover, interval and so on.

Three-dimensional folding problem-solving skills, give an unfolded figure, correctly identify the shape of the figure after it is folded into a solid figure, mainly use special face method, adjacent face method and opposite face method, and use an eraser to simulate the corresponding six faces during the examination, which will improve the accuracy a lot.