The conclusion of the Guadou principle model is that the trajectory of the driving point and the driven point are similar, and the trajectory of the driven point can be determined according to the included angle formed by the connecting line between the driving point and the driven point and the ratio of the distance between the driving point and the driven point to the fixed point.

If point P is a fixed point and point A is a moving point on circle O, then connecting PA is a line segment PB perpendicular to PA, so that PB is equal to PA. If the locus of point A is a circle, then the locus of point B is also a circle. If point P is a fixed point and point A is a moving point on the straight line L, connect PA as a line segment PB perpendicular to PA, so that PB is equal to PA.

In these two examples, there is a fixed point P, a driving point A, and a driven point B that changes with the change of point A. If the trajectory of point A is a straight line, then the trajectory of point B is also a straight line. If the locus of point A is a circle, then the locus of point B is also a circle. That is to say, as you sow, you reap, so it is called the melon-bean principle.

Melon words:

1, as long as I have been living seriously, I don't feel guilty. People will have no right to laugh at me as a fool who can't make ends meet, and there is no need to measure whether I am worth it by his yardstick.

A fool wants to give himself a big mouth. When he has a good scar, he will forget the pain

For those who are most prepared, exams are also difficult, because the biggest fool may ask questions that even the smartest person can't answer.

4. In the dream, you smiled and said, Fool, I am angry because I love you. One night passed and you are still there when I wake up in the morning.

Sometimes we really want to stick to our noble heart, but if everyone around us thinks you are a fool, it will make you a little at a loss.