Draw a straight line on the graph so that the graph below is divided into two triangles

Draw a straight line on the graph so that the graph below is divided into two triangles

As a Mathematical Olympiad problem, there is no solution, because the straight line is not thick and thin. Moreover, you can also prove from the angle of internal angle and that the graph can not be divided into two triangles. No matter who made it, even if it is a mathematical master, it is not considered. However, as a brain sharp turn, it is to draw a line thick enough