From the cyclic quadrilateral MNOP above, find the value of x.
- 16°
- 25°
- 42°
-
39°
The correct answer is: D
Explanation
The sum of two opposite angles of a cyclic quadrilateral = 180°
\(\therefore\) (2x + 18)° + 84° = 180°
2x + 102° = 180° \(\implies\) 2x = 78°
x = 39°
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