Across
- 4. Very old; from a long time ago
- 6. Correct; without errors
- 8. A population marked by differences
Down
- 1. Something that is not easily understood or explained
- 2. Showing courage in the face of danger
- 3. A long trip from one place to another
- 5. Shapes or figures that have attributes in common
- 7. To sort items into appropriate categories