document.write( "Question 143778: There are 126 different figures that can be formed using four of the 9 dots in the figure below.
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\n" ); document.write( "What is the probability that if you select four dots at random and connect them, the figure will be a square? Any help would be great. Thanks
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Algebra.Com's Answer #104637 by oscargut(2103)\"\" \"About 
You can put this solution on YOUR website!
if we put numbers at the 9 points\r
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\n" ); document.write( "\n" ); document.write( "you can form squares using:\r
\n" ); document.write( "\n" ); document.write( "1245
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\n" ); document.write( "\n" ); document.write( "then you can form 6 squares so probability is 6/126 =1/21\r
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