Question 161
Find the values of x and y in the following parallelogram.
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Solution
In a parallelogram, adjacent angles are supplementary. ∴120∘+(5x+10)∘=180∘⇒5x+10∘+120∘=180∘⇒5x=180∘−130∘⇒5x=50∘⇒x=10∘
Also, opposite angles are equal in a parallelogram.
Therefore, 6y=120∘⇒y=20∘