A) Rectangle
B) Square
C) Parallelogram
D) Trapezium
Correct Answer: B
Solution :
Let \[A=(1,\,1,\,1)\];\[B=(-2,\,4,\,1)\];\[C=(-1,\,5,5)\] &\[D=(2,\,2,\,5)\] \[AB=\sqrt{9+9+0}=3\sqrt{2},\,\,BC=\sqrt{1+1+16}=3\sqrt{2}\] and \[CD=3\sqrt{2}\] and \[AD=3\,\sqrt{2}.\] Hence it is a square.You need to login to perform this action.
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