Thus, in a right triangular assembly of three connector elements, in which two rod elements of length Lx form sides, {HEAD ~ a rod element} of the next larger size forms {TAIL ~ a hypotenuse} 
forms
Thus , in a right triangular assembly of three connector elements , in which two rod elements of length Lx form sides , { HEAD ~ a rod element } of the next larger size forms { TAIL ~ a hypotenuse }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL