The estimation of irregular graphics in the fifth grade of People's Education Press can be estimated. According to relevant public information, it is estimated that the area of irregular figures belongs to Class 8, Grade 5, Primary School Mathematics, which is published by People's Education Press. The area of an irregular figure is estimated by approximately treating it as a polygon with an area to be found, and the area of an irregular figure is estimated by using the grid method and the approximate figure area method.