2 Answers

Sknecht · Answer 1 · 2021-09-17T10:27:54+0000

Answer:

Option B

$m\angle PTR=123^o$

Explanation:

we know that

The measure of the interior angle is the semi-sum of the arcs comprising it and its opposite

so

$m\angle PTR=(1)/(2)[arc\ PR+arc\ QS]$

substitute the given values

$m\angle PTR=(1)/(2)[140^o+106^o]$

$m\angle PTR=123^o$

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