Across
- 2. expressions that have variables in them
- 6. (x+ y) + z = x + (y + z)
- 7. closed shapes with equal measure of angles and sides
- 8. polygon with five sides
- 9. space within the boundary of a closed shape
Down
- 1. distance along the boundary of a closed figure
- 2. deals with variables and constants to devise general rule
- 3. x × y = y × x
- 4. x × (y + z) = (x × y) + (x × z)
- 5. symbol that represents an unknown number