document.write( "Question 394686: If PQ = 21 cm and QR = 5 cm, then what are the possible lengths for PR so that PQ, QR , and PR can form a triangle? Explain your reasoning. \n" ); document.write( "
Algebra.Com's Answer #280083 by richard1234(7193)![]() ![]() You can put this solution on YOUR website! The sum of any two sides must be longer than the third side. This means,\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The last inequality, \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Putting the inequalities together, we have |