Answer:
c = 23°
b = 157°
watch the picture
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
