The area of the triangle formed by the points A(2,0), B(6,0) and C(4,6) is
If (x1, y1), (x2 , y2), (x3, y3) (x1, y1) (x2, y2), (x3, y3) are the vertices of a triangle then its area is given by
Area = |1/2 (x1(y2 −y3)+x2 (y3 −y1 )+x3 (y1 −y2 ))|
Area = 
[(2(0-6)+6(6-0)+4(0-0)]
⇒ 
[-12+36+0]
⇒ 12 sq. units
14