Question

(iv) 3
1
2
5 7 1
+2_x
7 19 2
+ 2 = ?
8
(a) 3
(b) 6
(c)
9​

Answer 1

Answer:

Let A(7,3),B(6,1),C(8,2) and D(P,4)

We know that the diagonals of a parallelogram bisect each other. So,the midpoint of AC is same as the mid point of BD.

Mid point of two points (x

1

,y

1

) and (x

2

,y

2

) is calculated by the formula (

2

x

1

+x

2

,

2

y

1

+y

2

)

=>(

2

7+8

,

2

3+2

)=(

2

6+p

,

2

1+4

)

=>

2

7+8

=

2

6+p

=>15=6+p

=>p=9