1103021503

SubArea: 
Level: 
Project ID: 
1103021503
Source Problem: 
Accepted: 
1
Clonable: 
1
Easy: 
1
Determine the measure of the angle contained by two line segments: the first joining numbers \( 7 \) and \( 1 \), and the second joining numbers \( 1 \) and \( 4 \), on a clock face. (See the picture.)
\( 45^{\circ} \)
\( 60^{\circ} \)
\( 30^{\circ} \)
\( 90^{\circ} \)