M∠1 = _° a) 140 b) 160 c) 80

Mathematics

2 answers:

VashaNatasha [74]3 years ago

7 0

Answer:

Option c $80\°$

Step-by-step explanation:

we know that

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

in this problem

$m$

Sauron [17]3 years ago

4 0

∠1 = 1/2 (220 - 60) = 80°

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Answer: 80°
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