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document.write( "Hi \n" );
document.write( "Note: If a, b and c are the lengths of the sides of a triangle and c is the largest side, then \n" );
document.write( "(1) a^2 + b^2 = c^2 => right triangle \n" );
document.write( "(2) a^2 + b^2 > c^2 => acute-angled \n" );
document.write( "(3) a^2 + b^2 < c^2 => obtuse-angled \n" );
document.write( "Classify the triangle based on side lengths 4, 6 and 7 \n" );
document.write( " 4^2 + 6^2 > 7^2 Acute-angled Triangle