NIFT UG 2017 Question Paper with solutions

Question : 59 of 150

Marks: +1, -0

The area of a triangle with vertices (0, 0), (3, 3) and (–3, 3) is ______ .

Solution:

Area of triangle

=1/2[x_1(y_2-y_3)+x_2(y_3-y_1)+x_3(y_1-y_2)]

=1/2[0(3-3)+3(3-0)+(-3)(0-3)]

=1/2[(0+9+9)]

=18/2=9

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