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rosijanka [135]
4 years ago
11

​ Quadrilateral ABCD ​ is inscribed in this circle.

Mathematics
1 answer:
balandron [24]4 years ago
4 0

ABCD\: is\: an\: inscribed\: quadrilateral \\ \Rightarrow \hat{A}+\hat{C}=180°\Leftrightarrow \hat{A} = 180° - \hat{C} = 180° - 43° = 137°

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