When two angles of the same size are placed back to back, it is called a double angle. LLBB stands for Long Leg Back to Back and SLBB stands for Short Leg Back to Back. Is the double angle in Figure $2$ LLBB or SLBB$?$ Use Table $1-7$ of the AISC Manual to calculate $I_x,r_x,l_y$ and $r_y$ for this double angle. Assume there is no gap between the two legs and all of the shapes are rectangular. Compare the results with what you can in Table $1-15.$i$7$