Respuesta :

Answer:

c = 23°

b = 157°

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Step-by-step explanation:

sum of all angles = 360°

c = 23° (opposite vertical angles so congruent)

b = (360° - 23 - 23) : 2    (opposite vertical angles so congruent)

b = 314 : 2

b = 157

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check

23 + 23 + 157 + 157 = 360°

the answer is good

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