Question

If the coordinates of the vertices of a triangle are (0,0) , (0,2) and(3,1) , then area of the triangle is

• A. 3 sq.units
• B. -3 sq. units
• C. 2 sq. units
• D. 1 sq.units

Answer 1

The correct option is A 3 sq.units

Area of triangle $=\frac{1}{2}\left|\begin{array}{ccc}0& 0& 1\\ 0& 2& 1\\ 3& 1& 1\end{array}\right|=\frac{1}{2}\times |-6|=3$