In a rectangular axis system, what is the area of a parallelogram with the coordinates: (1,3), (5,3), (2,6), (6,6) ?
Choose the correct answer:
A) 21. B) 12. C) 35. D) 49. E) 52.
Delta x will give us the dimension of one side of the parallelogram = 5-1= 
<gadget id="calculator">5-1</gadget>
<output>4</output>
4 unit   Delta y will give us the dimension of the other side of parallelogram= 6-3= 
<gadget id="calculator">6-3</gadget>
<output>3</output>
3 unit   Area of parallelogram= 4*3= 
<gadget id="calculator">4*3</gadget>
<output>12</output>
12   ANSWER IS 12.
<result>B</result>
In a rectangular axis system, what is the area of a parallelogram with the coordinates: (1,3), (5,3), (2,6), (6,6) ?