2010012802
Level:
A
Determine the measure of the angle contained by two line segments: the first joining numbers \( 7 \) and \( 9 \), and the second joining numbers \( 7 \) and \( 2 \), on a clock face. (See the picture.)
\( 75^{\circ}\)
\( 30^{\circ}\)
\( 55^{\circ}\)
\( 60^{\circ}\)
