Answer:
A

Explanation:
If you take a look at m∠8 & m∠6 and m∠4 & m∠2, they all form linear pairs, and linear pairs sum up to 180°, and m∠6 and m∠2 are in correspondence with each other [equivalent angle measures], according to the Angle Correspondence Theorem:
180° = 132° + m∠8
- 132° - 132°
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