20 15 graphic reasoning's problem-solving skills in Tianjin institutions.

20 15 Tianjin institutions examination recruitment and publicity information summary

20 15 reading materials for preparing for the interview in Tianjin institutions: graphic reasoning is a common examination module in the examinations of Tianjin institutions. If candidates don't practice this part of the questions, their answers in the exam may be unsatisfactory. In fact, graphic reasoning is not difficult. As long as we strengthen our understanding of graphics and accumulate more at ordinary times, we will certainly achieve excellent results in the exam. Let's share some skills related to graphic reasoning.

The basic concepts of earth pushing mainly include the following aspects:

1, symmetry, mainly including axial symmetry and central symmetry. The main directions of axis symmetry are the number of axis symmetry and the direction of axis symmetry. Generally speaking, for centrally symmetric figures, how to distinguish between axial symmetry and central symmetry is investigated. Of course, there are two main types of graphics to distinguish and classify together.

2, superposition, mainly refers to the superposition of two graphics or give up, get another graphic. It mainly includes simple superposition, similarities and differences, differences and similarities, and regular superposition.

3. Position relationship, mainly including movement, rotation and rotation.

4. Points, lines and faces

Point: mainly investigate the intersection point (including tangent point, cross intersection point, inflection point, T-point and various special figures).

Line: There are straight curves, which mainly investigate the quantitative relationship of straight curves and judge straightness.

Face: the main points of face are closed space, number of parts, small graphics and so on.

5. Element composition

Elements are mainly composed of closed, open, straight, symmetrical and * * * elements.

example

Answer: c

According to the shape of the arc in the original drawing, items B and D can be excluded. The big square in the original picture can be recombined to get two small squares with two diagonal lines, so item A is wrong and item C is correct.