Perimeter and Area

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Across
  1. 3. The middle of a circle
  2. 4. Lines that do not intersect
  3. 10. Lines that meet at right angles
  4. 12. 3.14......
  5. 13. The distance from the centre to a point on the circle
  6. 14. A shape made up of other basic shapes
  7. 15. 10000 square metres
  8. 17. Another name for the height of a triangle
  9. 18. An old unit of area
  10. 19. A quadrilateral that is shaped like a flying object
Down
  1. 1. Used to find the area of shapes
  2. 2. A quadrilateral with all right angles
  3. 5. A quadrilateral with all sides the same length
  4. 6. A quadrilateral with all right angles and all sides same length
  5. 7. a quarter of a circle
  6. 8. The distance around the outside of a shape
  7. 9. The distance from a point on the circle to another point on the circle, passing through the centre
  8. 11. The perimeter of a circle
  9. 16. The number of square units inside a shape