Measurement

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Across
  1. 3. A shape made from more basic shapes.
  2. 7. A triangle with two equal sides.
  3. 12. Quarter of a circle.
  4. 13. A line joining opposite corners of a shape.
  5. 14. Part of the circumference of a circle.
  6. 17. Distance from middle of circle to the circle.
  7. 18. Perimeter of a circle.
  8. 20. Another name for the height of a triangle.
  9. 21. A quadrilateral with one pair of parallel sides.
  10. 22. Line that meet at right angles
  11. 23. A quadrilateral with opposite sides parallel.
Down
  1. 1. The longest side in a right triangle.
  2. 2. A 4-sided shape with all sides equal.
  3. 4. Half a circle.
  4. 5. A theorem used in right triangles.
  5. 6. The number of square units in a shape.
  6. 8. A quadrilateral with all angles 90 degrees.
  7. 9. Part of a circle bounded by two radii and an arc.
  8. 10. Use to calculate area of shapes.
  9. 11. Distance around the boundary.
  10. 15. An old measure of area.
  11. 16. 10000 square metres.
  12. 19. A special number that is used with circles.
  13. 21. A 3 sided polygon.