Answer: 1. 180° 2. 50° 3. 130° 4. 25°
Explanation:
1 BEH is "intercepted" by the diameter, therefore 180°
2 HE is the arc intercepted by the given central angle 50°
3 Subtract the given 50 from the 180 so 130
4. Measure f Angle HBE is 1/2 the intercepted arc HE, determined to be 50°