Answer:
180°
Step-by-step explanation:
1/2 hour = 30 minutes
1 hour is 360° degrees.
1/2 hour = 360 ÷ 2 = 180°
Answer:
180
Step-by-step explanation:
because half a circle is 180 degrees and since 1/2 hour means she returns at 9:30 the minute hand would have to move half of a circle around the clock