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Maths-

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Question

The points $left parenthesis 4 comma blank 7 comma blank 8 right parenthesis$ , $left parenthesis 2 comma blank 3 comma blank 4 right parenthesis$ , $left parenthesis negative 1 comma blank minus 21 right parenthesis$ and $left parenthesis 1 comma blank 2 comma blank 5 right parenthesis$ are

The vertices of a parallelogram
Colinear
The vertices of a trapezium
Concyclic

The correct answer is: The vertices of a parallelogram

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