document.write( "Question 887325: Given an equilateral triangle with two vertices located at (-8, -5) and (3, 7), what is its perimeter? \n" ); document.write( "
Algebra.Com's Answer #536535 by algebrapro18(249)\"\" \"About 
You can put this solution on YOUR website!
    Facts we will use:

      \n" ); document.write( "1) Equilateral triangles have all the same side lengths
      \n" ); document.write( "2) Perimeter of a triangle = the sum of all 3 side lengths
      \n" ); document.write( " = 3*one side length(from fact 1)
      \n" ); document.write( "3) The length of a side of a triangle is equal to the distance between the two vertices connected by that side.
      \n" ); document.write( "4) The distance between two points is \"d=sqrt%28%28x2-x1%29%5E2%2B%28y2-y1%29%5E2%29\"
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      \n" ); document.write( "\n" ); document.write( "So we need to find the distance between the two given vertices and then multiply that by 3 to find the Perimeter(from facts above).
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      \n" ); document.write( "\n" ); document.write( "Perimeter = 3*\"sqrt%28%28x2-x1%29%5E2%2B%28y2-y1%29%5E2%29\"
      \n" ); document.write( "= 3*\"sqrt%28%28-8-3%29%5E2%2B%28-5-7%29%5E2%29\"
      \n" ); document.write( "= 3*\"sqrt%28%28-11%29%5E2%2B%28-12%29%5E2%29\"
      \n" ); document.write( "= 3*\"sqrt%28121%2B144%29\"
      \n" ); document.write( "3*\"sqrt%28265%29\"
      \n" ); document.write( " \n" ); document.write( "
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