document.write( "Question 1068369: Find the perimeter of a triangle with points A(1,2), B(1,8)$, and C(5,5) on a Cartesian coordinate plane. \n" ); document.write( "
Algebra.Com's Answer #683600 by ikleyn(52866)\"\" \"About 
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\n" ); document.write( "Find the length of each side SEPARATELY.\r
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\n" ); document.write( "\n" ); document.write( "Then sum up the three lengths.\r
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\n" ); document.write( "\n" ); document.write( "The formula for the length of each side is L = \"sqrt%28%28x%5B2%5D-x%5B1%5D%29%5E2+%2B+%28y%5B2%5D-y%5B1%5D%29%5E2%29\".\r
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