Across
- 1. anything that is shaped like a ball or globe
- 4. the act or process of mathematics
- 6. the length of a straight line passing through a circle
- 7. nearly correct or exact; about
- 8. of or having to do with astronomy
Down
- 2. to judge or discover the value of something
- 3. rules, standards or tests used to judge or measure
- 5. to move in a circle around another object