If you don't think about it carefully, it is "cheating, shameless and abnormal." This is a question of attitude.

1. If the triangle AOB is divided into two parts with equal areas, Sa= 1/2*b*OA, Sc= 1/2*b*OC, that is, OA=2 OC. Calculate B (0 0,2) and A (2,0) from y=-x+2, then calculate C( 1, 0), and then calculate the value of K according to the formula between two points.

2. If the AOB of a triangle is divided into two parts, is the area ratio 1:5, b or (0,2)? Find other things in the same way and think for yourself.