document.write( "Question 612207: what kind of triangle has sided lengths 20 21 28 \n" ); document.write( "
Algebra.Com's Answer #385328 by Edwin McCravy(20055)\"\" \"About 
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document.write( "Rule:  \r\n" );
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document.write( "Use the Pythagorean theorem to find the length of the\r\n" );
document.write( "hypotenuse of a right triangle whose legs are the shorter two\r\n" );
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document.write( "a. If the longest side is shorter than this hypotenuse, the\r\n" );
document.write( "triangle is an acute triangle.\r\n" );
document.write( "b. If the longest side is longer than this hypotenuse, the\r\n" );
document.write( "triangle is an obtuse triangle. \r\n" );
document.write( "q. If the longest side is equal to this hypotenuse, the\r\n" );
document.write( "triangle is a right triangle.\r\n" );
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document.write( "c² = a² + b²\r\n" );
document.write( "c² = 20² + 21²\r\n" );
document.write( "c² = 400 + 441\r\n" );
document.write( "c² = 841\r\n" );
document.write( " c = 29\r\n" );
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document.write( "The longest side is shorter than that hypotenuse, so the triangle\r\n" );
document.write( "is acute.\r\n" );
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document.write( "Edwin
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