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Questions
In the given figure, ∠BAD = 78°, ∠DCF = x° and ∠DEF = y°. Find the values of x and y.

In the figure, find the value of angles x and y.

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Solution
We have to find the value of x and y.
Since ABCD is a cyclic quadrilateral.
∠A + angle BCD = 180° (Opposite angle of a cyclic quadrilateral are supplementary)
Step 1:
∠BAD + ∠BCD = 180°
Given ∠BAD = 78°, we can find ∠BCD
78° + ∠BCD = 180°
∠BCD = 180° − 78°
∠BCD = 102°
Step 2:
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