1 and 1 are connected to 2 and 2 are connected to 3 and 3, and cannot be crossed?

Second, as shown in the figure below, connect the two 2s correspondingly. Draw from the top of the number 2 to the right, between the numbers 2 and 3 and then down, then to the right, through the bottom of the number 3.

Yes, connect these three points as you described, and the line they form is a special geometric shape called a polyline (also known as a polyline segment). In this polyline, the segments connecting 1 and 2 do not cross the segments connecting 2 and 3, they are connected at the point of 2, not crossed.

A polyline is a series of straight segments, connected by straight segments between every two adjacent points. In your description, the straight line segment connecting 1 and 2 and the straight line segment connecting 2 and 3 are separated, they share an endpoint 2, but do not intersect.

If you connect these three points sequentially into a closed graph (triangle), then the straight line segments connecting 1 and 3 will pass through the straight segments connecting 2 and 2, but according to your description, they do not form a closed graph, but a polyline.

You can draw three points on the coordinate plane and connect them with straight lines without intersecting them. You can connect it like this:

Lines 1 through 3 do not cross, but lines 1 through 2 and 2 through 3 do. If you have to make sure that the three lines do not cross each other, you can connect them in order to form a triangle, as shown in the following figure:

In this way, the three lines no longer intersect.

In planar geometry, given three disjoint points a(1,1), b(2,2), and c(3,3), you can get a continuous line segment by connecting ab and bc. The two endpoints of this segment are A and C. Since these three points are collinear, the wires ab and bc do not cross.

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There are only two ones in the middle, and 2 and 3 are on the four corners, how can they be connected!

This is the only geometric problem with lines, which requires that the specified points be connected, but that the lines should not intersect. For such problems, we can use the knowledge in mathematics to solve them by carefully observing the points and rules given.

If we look at the 3 lines individually, we will see that the position of the points connected by each line is different. Therefore, we can mark the points that each line connects before we make the connection. When we try to connect each line, we need to find the shortest path between two points, which can be achieved by calculating the distance between the two points.

For this problem, we need to use the nature of triangles to calculate the relationship between the three lines, and then determine the position of each point, so as to draw the line.

To make sure the lines don't intersect, we need to find all possible intersections. Once we've identified the intersections, we can resolve the conflict between them by rearranging the way the lines connect. We can use computer programs to solve this problem effectively.

From this topic, we can see the importance of mathematics in our daily life. Learning math can help us learn more complex things and solve practical problems. By practicing math, we can gain more problem-solving skills and self-confidence.

In conclusion, this problem teaches us to look at the problem carefully and apply mathematical knowledge to solve it. We can improve our math skills through study and practice and become more confident and effective in solving problems. <>