Answer:

1. 20°

2. 40°

3. 140°

4. 160°

Step-by-step explanation:

1. 20° - 0° = 20°

2. 180° - 140° = 40°

3. 140° - 0° = 140°

4. 180° - 20° = 160°

SANA MAKATULONG

STAN (G)-IDLE