document.write( "Question 113685: Give the coordinates of three points that form a triangle, what formula must be used to determine if the triangle is equilateral? \n" ); document.write( "

Algebra.Com's Answer #82735 by checkley71(8403) $\"\"$ $\"About$

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THE DISTANCE BETWEEN THE 3 POINTS MUST BE EQUAL.
\n" ); document.write( "THIS DISTANCE FORMULA IS:
\n" ); document.write( "D=SQRT[(X2-X1)^2+(Y2-Y1)^2] \n" ); document.write( "

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