Question

the 3 vertices of ABC are A(1,4)B(-2,2)C(3,2) plot these on a graph paper and calculate the area of ABC

Answer 1

height of the ∆abc is 2 unit
Base of the ∆abc is 5 unit
1/2*5*2
5 sq.unit

Answer 2

Area =0.5|(x1(y2-y3)+x2(y3-y1)+x3(y1-y2)|

area=0.5|(1(2-2)-2(2-4)+3(4-2)|

hence area of the triangle is 5 units