Across
- 1. Round, three-dimensional figures; globes.
- 4. The act or process of determining something using mathematics.
- 6. The length of a straight line passing through the center of a circle or sphere, from one side to another.
- 7. Nearly correct or exact; about
- 8. Having to do with astronomy
Down
- 2. To judge or discover the value of something.
- 3. Rules, standards, or tests by which something or someone can be judged or measured.
- 5. To move in a circle around another object.