Across
- 2. A regular quadrilateral with 4 equal sides and 4 right angles.
- 3. The general name for any closed 2D shape with straight sides.
- 7. The property of a shape when it can be folded to match exactly on both sides.
- 8. A triangle where all three sides have different lengths and all angles are different.
- 9. A 2D flat pattern that folds up to create a 3D solid.
- 12. A member of the quadrilateral family with 4 equal sides but no right angles.
- 13. A 2D plane shape (polygon) that has exactly six sides.
- 15. An angle that is smaller than 90 degrees.
- 16. The specific characteristics of a shape, such as its number of sides or faces.
- 19. The units used to measure the amount of turn in an angle.
Down
- 1. Lines that meet or cross at exactly 90 degrees.
- 3. A solid with a uniform cross-section that stays the same all the way through.
- 4. The name for an angle that is greater than 90 degrees but less than 180 degrees.
- 5. A type of triangle that has exactly two sides of equal length.
- 6. The plural form of "vertex"; the points where edges meet on a 3D solid.
- 10. Lines that are always the same distance apart and never cross each other.
- 11. The amount of 3D space an object occupies.
- 14. A quadrilateral with only one pair of parallel sides.
- 17. The name of an angle that forms a perfect "L" shape or a quarter turn.
- 18. The type of symmetry that acts like a mirror image.