document.write( "Question 1117061: Prove That The sum of all the iterior angles is equal to two right angler? \n" ); document.write( "
Algebra.Com's Answer #732021 by ikleyn(52925)\"\" \"About 
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\n" ); document.write( "See the lesson\r
\n" ); document.write( "\n" ); document.write( "    - Sum of the interior angles of a triangle\r
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\n" ); document.write( "\n" ); document.write( "The proof is there.\r
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