Question

The points $(4,-5,1),(3,-4,0),(6,-7,3),(7,-8,4)$ are vertices of a

• A. Square
• B. parallelogram
• C. Rectangle
• D. Rhombus

Answer 1

Answer: (B)

Let $A(4,-5,1)$ and $C(6,-7,3)$
$\therefore$ Mid point of $AC(5,-6,2)$
$B(3,-4,0)$ and $D(7,-8,4)$, Mid point of
$BD=(5,-6,2)$
As mid point of AC = Mid point of B D
$\therefore$ ABCD is a parallelogram