Maribethhernaez65go Maribethhernaez65go Math Answered . Seat Work #4 In the figure, point O is the center of the circle with AB as the diameter. Name the following: 1. 2 Radil 2. 2 Central angles 3. Semicircle 4. Minor arc 5. Major arc 6. Inscribed angle 7. Chord 8. Diameter.