1103021708

SubArea: 
Triangles
Level: 
A
Project ID: 
1103021708
Source Problem: 
2010015209
Accepted: 
1
Clonable: 
1
Easy: 
1
What is the measure of the angle \( \alpha \)? (See the picture.)
\( 7^{\circ} \)
\( 76^{\circ} \)
\( 83^{\circ} \)
\( 16^{\circ} \)