Question

plzz solve 13 no. question..

Answer 1

Area of the triangle =
$\frac{1}{2} (x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2)$
=
$\frac{1}{2} (0(6 + 2) + 3( - 2 - 4) - 8(4 - 6))$
=
$\frac{1}{2} (0 - 18 + 16)$
$=| \frac{1}{2} \times ( - 2) |$
1 square unit