I can’t figure this out! I don’t really know if I’m supposed to use the vertices that are on the coordinate plane or something else, I need help. My question is, What’s the area and the perimeter of the polygon????

Answer:
Area : 27
Perimeter : 24
Step-by-step explanation:
Area : Just count the number of squares in the box
Perimeters : Count the number of squares surrounding the box