Step-by-step explanation:
C and D are the correct objectives
Answer:
(2,-3)
x=2 y=-3
2x+y=1 y=1-2x
3x+2y=0
3x+2(1-2x)=0
3x+2-4x=0
-x+2=0
-x=-2
x=2
2x+y=1
2(2)+y=1
4+y=1
y=-3
nanogon have 27 diagnals