document.write( "Question 117701:
\n" ); document.write( "show that ABCD is a square if a (4,-1) B(6,0)C (7,-2) and D (5,-3) \n" ); document.write( "

Algebra.Com's Answer #85769 by checkley71(8403) $\"\"$ $\"About$

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THE EASIEST WAY TO PROVE THIS IS A SQUARE -- OR NOT -- IS TO PLOT THESE 4 SETS OF POINTS.
\n" ); document.write( "DONE PROPERLY, YOU'LL SEE THAT THESE 4 POINTS FORM A SQUARE.
\n" ); document.write( "CALCULATING THE DIFFERENCE BETWEEN EACH SET OF POINTS WILL SHOW THAT THEWY ARE EQUAL.
\n" ); document.write( "PROVING ALL 4 ANGLES ARE 90 DEGREES IS A LITTLE MORE COMPLICATED.
\n" ); document.write( "WHEN POSSIBLE USE THE GRAPHING TECHNIQUE FOR THESE TYPE OF PROBLEM. IT'S MUCH FASTER & YOU HAVE THE VISUAL PROOF JUST BY SOLVING THE PROBLEM.
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