Across
- 1. anything that is shaped like a ball or a globe
- 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 the other
- 7. nearly correct or exact
- 8. of or 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