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If sum(i-1)^4(x1^2+y 1^2)lt=2x1x3+2x2x4+...

If `sum_(i-1)^4(x1^2+y 1^2)lt=2x_1x_3+2x_2x_4+2y_2y_3+2y_1y_4,` the points `(x_1, y_1),(x_2,y_2),(x_3, y_3),(x_4,y_4)` are

A

the vertices of a rectangle

B

collinear

C

the vertices of a trapezium

D

None of these

Text Solution

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The correct Answer is:
A
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