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CBSE Class 10 Answered

If A (-2,-1) ,B (a,0), C (4,b) and D(1,2) are the vertices of parallelogram, find the values of a and b. OR If the mid point of the line segment joining the points A (3,4) and B (k, 6) is P (x,y) and x+y-10=0, then find the value of k.
Asked by Topperlearning User | 22 Nov, 2013, 03:29: AM
answered-by-expert Expert Answer

We know that the diagonals of a parallelogram bisect each other, i.e., the mid point of AC will be the same as that of BD.

\

a = 1 and b = 3

OR

Coordinates of the mid point of the line segment joining A (3,4) and B (k,6) =

\= (x,y)

=x and 5=y

Since, x+y-10=0

So,

3+k=10

k = 7

Answered by | 22 Nov, 2013, 05:29: AM

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