3. Find all the interior and exterior angles

The exterior angle of the following triangle \(PQR\) of \(∠R = 139°\). Determine the interior and exterior angles of \(P, Q\) and \(R\).
 
Test_4_1.png
 
Vertex\(∠P\)\(∠Q\)\(∠R\)
Interior\(°\)\(°\)\(°\)
Exterior\(°\)\(°\)\(°\)
 
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