SOLUTION: Show that the quadrilateral with vertices A(-3,5), B(-1,0), C(11,12), and D(1,9) is a trapezoid.

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Question 66739: Show that the quadrilateral with vertices A(-3,5), B(-1,0), C(11,12), and D(1,9) is a trapezoid.
Answer by venugopalramana(3286) About Me  (Show Source):
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Show that the quadrilateral with vertices A(-3,5), B(-1,0), C(11,12), and D(1,9) is a trapezoid.
SLOPE OF AD=(9-5)/(1+3)=4/4=1
SLOPE OF BC=(12-0)/(11+1)=12/12=1
HENCE AD||BC
HENCE ABCD IS A TRAPEZIUM