Three Dimensional Geometry Question 131

Question: The points $ A(5,,-1,1) $ ; $ B,(7,-4,,7); $ $ C(1,,-6,,10) $ and $ D(-1,-3,,4) $ are vertices of a

[RPET 2000]

Options:

A) Square

B) Rhombus

C) Rectangle

D) None of these

Show Answer

Answer:

Correct Answer: B

Solution:

$ \because $ $ AB=BC=CD=DA=7 $ . Also $ \overrightarrow{AB},.,\overrightarrow{BC}\ne 0 $ \ ABCD is not square. It is rhombus.