In the figure below, HK and HI are tangent to the circle centered at O. The segment KI passes through the center of the circle. Given that HI=5.2 and KI=3.9, find KJ.

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.