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image.png

A140°

B300°

C150°

D200°

Answer:

C. 150°

Read Explanation:

x+80=2x+10x+80=2x+10

x=70x=70
angle=2×70+10=140+10=150angle = 2\times 70+10=140+10=150

angle1=150angle 1= 150

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