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ABCD is a quadrilateral in which (z)/(y)...

ABCD is a quadrilateral in which `(z)/(y)=(y)/(x)=(x)/(w)=k` and k is an integer. Also `{w, x} lt 90` and `{y, 2} gt 90`, then the difference between the greatest angle and smallest angle `("i.e.," z-w)` is:

A

A. `168^(@)`

B

B. `172^(@)`

C

C. `128^(@)`

D

D. `212^(@)`

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A
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