document.write( "Question 480043: what is the measure if the vertex angle of an isosceles right triangle when one of its base angles has a measure of 60 degree?
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Algebra.Com's Answer #852383 by Edwin McCravy(20065)\"\" \"About 
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document.write( "Every isosceles right triangle, a.k.a, a 45-45-90 right triangle, is half \r\n" );
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document.write( "Draw a square, which has 4 interior 90o angles.\r\n" );
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document.write( "Cut it down one of the diagonals:\r\n" );
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document.write( "Take the left half of the square:\r\n" );
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document.write( "The triangle above is an isosceles right triangle.  Notice that its\r\n" );
document.write( "vertex angle is 90o and each base angle is 45o.\r\n" );
document.write( "As you see, the base angles CANNOT be \"cross%2860%5Eo%29\" as you have stated.\r\n" );
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document.write( "Edwin
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