Given:
The base JK of isosceles triangle HJK is produced to L and angle J=69 degrees.
To find:
The measure of angle HKL.
Solution:
According to the given information draw a figure as shown below.
In triangle HJK, JK is base and base angles of an isosceles triangle are congruent.


JKL is a straight line. So,
(Linear pair)



Therefore, the measure of angle HKL is 111 degrees.