Across
- 4. The letter whose value changes
- 6. Each interior angle is less than 180
- 8. All sides and all angles are equal
- 9. An expression containing three terms
- 10. An expression containing two terms
Down
- 1. At least one interior angle is greater than 180
- 2. The line joining the opposite vertices of a quadrilateral
- 3. An expression containing more than three terms
- 5. Point where the adjacent sides meet
- 7. The letter with a fixed value