What are the angle measures of this triangle?

Sum of two interiors =exterior angle
[tex]\\ \sf\longmapsto 71+62=<2[/tex]
[tex]\\ \sf\longmapsto <2=133[/tex]
Now
[tex]\\ \sf\longmapsto <1+<2=180[/tex]
[tex]\\ \sf\longmapsto <1+133=180[/tex]
[tex]\\ \sf\longmapsto <1=47[/tex]