Q.

In fig ABCD is a parallelogram. Find the angles x and y. ____ and ____.


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Detailed Solution

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=180°   ⇒40°+x+80°=180°   ⇒x+120°=180°
⇒x=180°−120°
⇒x=60°   Hence, the value of angles x is 60° and of y is 40°.
 
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In fig ABCD is a parallelogram. Find the angles x and y. ____ and ____.