Covering and Surrounding

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Across
  1. 1. A quadrilateral with all sides equal
  2. 5. A triangle with a right angle
  3. 6. A triangle with two sides the same length
  4. 7. A six-sided polygona
  5. 8. A triangle with all sides the same length
  6. 12. A polygon with 4 sides
  7. 13. The distance around the outside of a shape
  8. 16. A five-sided polygon
  9. 17. An eight-sided polygon
  10. 20. A triangle with all acute angles
  11. 21. A triangle with one obtuse angle
Down
  1. 1. A quadrilateral with all right angles
  2. 2. A triangle with no sides the same length
  3. 3. A triangle with all angles the same size
  4. 4. The distance around a circle like the perimeter
  5. 9. The square units inside a shape
  6. 10. A quadrilateral with 2 pairs of parallel sides
  7. 11. The length and width of a shape
  8. 14. A quadrilateral with one pair of parallel sides
  9. 15. A shape made of only straight lines
  10. 18. A shape with all points the same distance from a center point
  11. 19. A quadrilateral with all sides equal and all right angles