The figure formed by the four points i + j - k, 2i + 3j, 3i + 5j -2k and k - j is
A
Rectangle
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B
Trapezium
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C
Parallelogram
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D
None of these
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Solution
The correct option is D Trapezium AB=→i+2→j+→kBC=→i+2→j−2→kCD=−3→i−6→j+3→kDA=→i+2→j−2→k∴BC=DAandBC∥DAandABisnotparalleltoCD∴pointmadeatrapeziumHence,optionBiscorrectanswer