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Mathematics
Problem
The figure formed by the four points
i
^
+
j
^
−
k
^
\hat{i} + \hat{j} - \hat{k}
i
^
+
j
^
−
k
^
,
2
i
^
+
3
j
^
2\hat{i} + 3\hat{j}
2
i
^
+
3
j
^
,
3
i
^
+
5
j
^
−
2
k
^
3\hat{i} + 5\hat{j} - 2\hat{k}
3
i
^
+
5
j
^
−
2
k
^
and
k
^
−
j
^
\hat{k} - \hat{j}
k
^
−
j
^
is a. rectangle b. parallelogram c. trapezium d. None of these
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