2 Answers

Transact Charlie · Answer 1 · 2020-11-14T23:39:46+0000

Answer:

The correct option is: 40

Explanation:

Measure of an arc is actually the measure of the central angle corresponding with that same arc.

Here, the corresponding central angle for arc
$\widehat{AB}$ is
$\angle1$ .

Given that,
$m\angle 1= 40$ °

So.....

$m\widehat{AB}=m\angle 1\\ \\ m\widehat{AB}=40\°$

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