Consider points A, B, C and D with position vectors `7 hati - 4 hat j + 7 hat k , hati -

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Consider points A, B, C and D with position vectors `7 hati - 4 hat j + 7 hat k , hati - 6 hat j + 10 hat k , - hati - 3 hatj + 4 hatk and 5 hati - hatj + hatk ` respectively. Then, ABCD is a
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