If the sides BA and DC of quadrilateral ABCD are produced as shown in the given figure, then

If the sides BA and DC of quadrilateral ABCD are produced as shown i

1.	If the sides BA and DC of quadrilateral ABCD are produced as shown in the given figure, then
A.	\[x+y=a+b\]
B.	\[x-y=a-b\]
C.	\[\frac{x-y}{2}=a-b\]
D.	\[2(x+y)=a+b\]
Answer» B. \[x-y=a-b\]

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If the sides BA and DC of quadrilateral ABCD are produced as shown in the given figure, then

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