Question

if a(- 2, 1 ) b ( 9,0 ) (4, 6 )and d( 1, X) the vertices of parallelogram ABCD find the value of A and B hence find the length of its side

Answer 1

Hi, 
Thanks for your question
Please check here 
https://brainly.in/question/3101230#readmore

it doesn't seem like it can be parallelogram.
In a parallelogram diagonals bisect each otherSo midpoint of AC = midpoint of BD
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the midpoints have different x coordinates. So it is not possible that it is parallelogram 


Hope it helped 

Answer 2

Use midpoint formula, m=(x1+x2)/2, (y1+y2)/2
Use it to find midpoint of AC and BD
But, this question that you’ve posted must be wrong. Because AC and BD must meet at the exact same coordinates which in your question. They are not