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munnipandey10084:
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Step-by-step explanation:
Here, ABCD is a parallelogram.
∠CBD=40o and ∠BAD=80o.
AD∥BC and BD is a transversal.
∴ ∠ADB=∠CBD [ Alternate angles ]
∴ ∠ADB=40o.
∴ y=40o.
In △ADB,
⇒ ∠ADB+∠DBA+∠BAD=180o
⇒ 40o+x+80o=180o
⇒ 120o+x=180o
⇒ x=180o−120o
⇒ x=60o
We get, x=60o and y=40o.
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