Q15 of 17 Page 12

The area of the triangle formed by the points P(0,1), Q(0,5) and R(3,4) 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 = [(0(5-4)+0(4-1)+3(1-5)]


⇒| [-12]|


⇒ 6 sq. units

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