Question

find the area of triangle formed by joining the midpoints of sides of triangle whose vertices are (- 5 -1)- (3,-5)(5,2) find the ratio of this area to the area of the given Triangle​

Answer 1

$area \: of \: triangle = \frac{1}{2} (x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2)$