document.write( "Question 1041009: geometry, area of a triangle given its 3 sides.
\n" ); document.write( "need proof of Heron formula \n" ); document.write( "
Algebra.Com's Answer #655938 by ikleyn(52788)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "Read these two lessons\r
\n" ); document.write( "\n" ); document.write( "    - Proof of the Heron's formula for the area of a triangle, \r
\n" ); document.write( "\n" ); document.write( "    - One more proof of the Heron's formula for the area of a triangle, \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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