Posted by shirley on Monday, January 16, 2012 at 1:41pm.
Find the area and perimeter of a rectangle for which (– 2, 2), (7,2), and (7, – 3) are three of the vertices. What is the 4th vertex?

math  Reiny, Monday, January 16, 2012 at 2:07pm
You could sketch the given points, but ...
just looking at the values, we can see the base runs from 2 to 7, so the base is 9
and the height goes from 3 to 2, so the height is 5
area = 5(9) = 45
perimeter = 2(5) + 2(9) = 28
missing point must be (2, 3)
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