Question

if A(_5,7) B (_4_5) C(_1_6)and (4,5) be the vertices quadilateral find the area of quadilateral

Answer 1

area formula is 1/2x1( y2-y3)+ x2(y3-y1)+ x3(y1-y2)
x1=-5: x2=-4:x3=-1: x4=4

y1=7: y2=-5: y3=6: y4=5
apply these value in formula of area given above