Triangle ADC is formed by joining the coordinates A(2,6), C(4,0) and D(0,0). Another Δ BCD is formed by joining the coordinates B(6,6), C(4,0) and D(0,0). Line y=6 and y=0 is parallel to each other. The points C(4,0) and D(0,0) lies on y = 0. The points A(2,6) and B(6,6) lies on line y=6. ABCD forms a quadrilateral. Which of the following is correct?
Quadrilateral ABCD is parallelogram.
AB is joined. Since y = 6 and y = 0 are parallel to each other; AD and BC are parallel to each other.
Also AD = BC, AB = CD.
In a quadrilateral ABCD, if opposite sides are parallel and equal then ABCD is a parallelogram.