well 1+1=2 and 2+2=4 and 4+4=8 and 8+8=16 then..............................................ummm.....................................uhhhhhhhh...........................wow this is hard.......................................................................I have no clue sorry thats all i know
Answer:
Step-by-step explanation:
20 is the area
And 18 is the perimeter
1, 3, 9 and -1, -3, and -9 i guess
hope this helps