Answer:
B. 114
Explanation:
angle CDA and angle BCD are supplementary, meaning they add up to 180 degrees
180 = 66 + x
x is representing angle BCD
subtract 66 from both sides
x = 114 degrees
Since angle CDAis 66 and m is BCD
Using co-interior angles
m+66=180
collect like terms
m=180-66
m=114
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