Answer:
Step-by-step explanation:
From the given figure, we get the coordinates of J,K and L as:
J(2,4), K(2,-2) and L(5,1).
Now, Using the distance formula,
JK=
JK=
Now, it is given that Triangle JKL has congruent sides, thus let JL=LK=x, then using Pythagoras theorem, we have

⇒
⇒
⇒
⇒
Thus, the length of one of the congruent legs of JLK is 