Q18 of 53 Page 122

Find the type of the quadrilateral if points A(-4, -2), B(-3, -7) C(3, -2) andD(2, 3) are joined serially.

According to the distance formula, the distance 'd' between two points (a,b) and (c,d) is given by
 .....(1)


Slope of a line between two points (a,b) and (c,d) is



AB = =


BC = =


CD = =


AD = =


Slope AB =


Slope BC =


Slope CD =


Slope AD =


As opposite sides are equal and parallel, it forms a parallelogram.


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