Respuesta :

∠1 = 1/2 (220 - 60) = 80°

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Answer: 80°
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calculista

Answer:

Option c [tex]80\°[/tex]

Step-by-step explanation:

we know that

The measurement of the external angle is the semi-difference of the arcs which comprises

so

in this problem

[tex]m<1=\frac{1}{2}(220\°-60\°)=80\°[/tex]