Prove that the quadrilateral defined by the points M(2,4), I(1,2), L(5,1), K(4,−1) is a parallelogram. Which Formula did you select and Why? Help!!!

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,