Across
- 2. area / the total area of a surface of a 3 dimensional object
- 4. / three dimensional shape either solid or hollow
- 6. angle / an angle less than 90 degrees
- 8. / lines that are at a right angle of one another
- 12. / having the same size and shape
- 13. / 3 straight sides and 3 angles
- 15. / parallelogram with opposite equal acute angles
- 17. / the amount of space within an object
- 18. / quadrilateral with only one pair of parallel sides
- 19. / the outer boundary
Down
- 1. angle / an angle greater than 90 degrees and less than 180 degrees
- 3. / a solid geometric figure with straight parallel sides and a circular or oval cross section
- 5. / quadrilateral with opposite sides parallel
- 7. / 4 straight sides and 4 right angles
- 9. / 4 right angles and equal sides
- 10. / the total outside
- 11. / measurement of a surface or piece of land
- 12. / a round plane figure
- 14. angle / an angle with a common side and a common vertex (cornerpoint)
- 16. / every point on its surface equal distant from its center