If vertices of a parallelogram are respectively (0, 0), (1, 0), (2, 2) and (1, 2), then angle between diagonals is [RPET 1996]

If vertices of a parallelogram are respectively (0, 0), (1, 0), (2, 2)

1.	If vertices of a parallelogram are respectively (0, 0), (1, 0), (2, 2) and (1, 2), then angle between diagonals is [RPET 1996]
A.	\[\pi /3\]
B.	\[\pi /2\]
C.	\[3\pi /2\]
D.	\[\pi /4\]
Answer» E.

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If vertices of a parallelogram are respectively (0, 0), (1, 0), (2, 2) and (1, 2), then angle between diagonals is [RPET 1996]

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