Across
- 3. has two dimensions
- 6. points that lie on the same line
- 7. has no dimension
- 8. rule that can be proved
Down
- 1. consists of two different rays with same endpoint
- 2. has one dimension
- 3. rule accepted without proof
- 4. absolute value of the difference of coordinates
- 5. points that lie in the same plane
- 6. segments that have the same length