Final answer:
The provided question lacks sufficient detail for a definitive solution, but a method to find the angle between the clock hands at 9:00 a.m. is described, which is 90 degrees.
Step-by-step explanation:
Finding the Missing Angle Measures
For the provided question, additional context is required to find the missing measures labeled 1-9. However, the given angles of ABC and ADC are not directly connected to the practice problems listed. As practice, let's consider problem number 1:
1. To find the angle between the hour and the minute hands at 9:00 a.m., we can start by noting that a clock is divided into 12 hours. Each hour represents 30 degrees (360° / 12). At 9:00 a.m., the hour hand is on 9, and the minute hand is on 12. The angle between the 9 and the 12 positions is 3 hours, or 3 * 30° = 90 degrees.