Question 1144212: Show that the points A(-2,6), B (5,3), C (-1,-11), and D (-8,-8) are vertices of a rectangle.
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Show that the points A(-2,6), B (5,3), C (-1,-11), and D (-8,-8) are vertices of a rectangle.
---------
Find the slopes of the 4 sides.
If consecutive sides are perpendicular, the angles are 90 degs, it's a rectangle.
----------
If the 2 diagonals, AC and BD, are equal length, it's a rectangle.
|
|
|
