Question

find the area of the triangle whose vertices are (2,3),(-1,0)and(2,-4)

Answer 1

1/2[2(0+4) -1(-4-3) +2(3+0)]
1/2[8 +7 +6]
1/2(21)
10.5
area of triangle is 10.5

Answer 2

Draw the diagram first.. Then u can understand easily....
I have used the area formula