Across
- 4. a group of numbers, variables and operations
- 8. to break into parts
- 10. length in one direction
- 12. a quadrilateral with one pair of parallel sides
- 13. a side from which the height is measured
Down
- 1. the amount of space inside a closed shape
- 2. the result of multiplication
- 3. perpendicular distance from a base to opposite side
- 5. opposite sides parallel and equal in length
- 6. meeting to form right angles
- 7. 2D with 3 or more straight line segments
- 9. to make by combining parts
- 11. the result of a subtraction problem