Respuesta :

bazanwar03
11: B
12: C
They are both supplementary angles meaning they add to 180 degrees
bayleecase2002
For 11, angles 1 and 2 must be supplementary, which means the sum of the two angles is 180° is the correct answer.

For 12, the answer would be 120° because 180° -  60° = 120°

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