if (1,2) (5,8) (3,4) & (2,5) are vertex of a quderilateral taken in order find the area
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Step-by-step explanation:
area of quadrilateral=
area of two triangles formed by one of its diagonal.-(1)
A(1,2)=x,y
B(5,8)=x2, y2
C(3.4)=x3,y3
D(2,5)=x4,y4
area of triangle ABC=1/2(x1(y2-y3)+x2(y3-y1)+x3(y1-y2))
=1/2(1(8-4)+5(4-2)+3(2-8)
=1/2(4+10-18).
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