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Sagot :
Answer:
a = 143°
b = 37°
c = 143°
Step-by-step explanation:
Theorems on intersecting lines are used:
b = 37° ( vertically opposite angles)
c + 37° = 180° ( straight angles)
c = 180° - 37°
c = 143°
c = a ( vertically opposite angles)
a = 143°
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