Draw a flow chart and determine the 5-point bisector of the line segment AB with the ruler-rail diagram.

With the help of the parallel line theorem, we can transform the proportional relationshi

Draw a flow chart and determine the 5-point bisector of the line segment AB with the ruler-rail diagram.

With the help of the parallel line theorem, we can transform the proportional relationship of position into a known proportional relationship, and we can complete the task by following the rules step by step.

Analysis:

Step 1: Starting from the left end point A of the known line segment, make a ray AP that is not parallel to AB at will;

Step 2: Take any point C different from the end point A on the ray to get the line segment AC;

Step 3: intercept the line segment Ce = AC in the direction of ray extension AC.

Step 4: intercept the line segment ef = AC in the direction of ray extension AC.

Step 5: intercept the line segment fg = AC in the direction of ray extension AC.

Step 6: intercept the line segment GD=AC in the direction of ray extension AC, and then the line segment AD = 5AB；;

Step 7: connect db;

Step 8: Take the parallel line whose C is BD and intersect with the line segment AB at m, so that the point M is the bisector of the line segment AB.

Program block diagram: