document.write( "Question 1144212: Show that the points A(-2,6), B (5,3), C (-1,-11), and D (-8,-8) are vertices of a rectangle. \n" ); document.write( "

Algebra.Com's Answer #765261 by Alan3354(69443) $\"\"$ $\"About$

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Show that the points A(-2,6), B (5,3), C (-1,-11), and D (-8,-8) are vertices of a rectangle.
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\n" ); document.write( "Find the slopes of the 4 sides.
\n" ); document.write( "If consecutive sides are perpendicular, the angles are 90 degs, it's a rectangle.
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\n" ); document.write( "If the 2 diagonals, AC and BD, are equal length, it's a rectangle.
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