Question

points A (-3,-2),B(-6,a) ,C(-3,-4) and D(0,-1) are the vertices of a qudrilateral ABCD; find a if'a' is negative and AB=CD.​

Answer 1

Answer: -1

Explanation: If AB=CD then AB = √18 due to pythagoras theorem

the base of triangle of AB = base of triangle of CD,

So, perpendiculars should be =

then,

-4(y coordinate of C) - (-1(y coordinate of D)) should be = -2 -(-a)

or -3 = a-2

or a = -1

BTW I accidently gave myself 1 star(I'm kinda new here:D)