Geometry

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Across
  1. 2. a line down the middle of a circle
  2. 5. it's the halfway point of a circle
  3. 9. blank equals 3.14
  4. 10. a blank has equal sides
  5. 11. blank is the same as 90 degrees
  6. 12. blank is a type of math
  7. 14. it's not a square but a blank
  8. 17. a triangle that has 2 equal sides
  9. 19. blank is the point of a shape
  10. 20. blank is the inside space of a shape
Down
  1. 1. blank is the distance around a circle
  2. 3. the opposite sides of a blank are equal
  3. 4. a big version of a triangle
  4. 6. blank is how you find the area of a 3-D shape
  5. 7. blank is that same as perpendicular
  6. 8. a triangle that has all sides equal
  7. 9. Egypt has these things
  8. 13. a blank equals 180
  9. 15. a small version of a triangle
  10. 16. blank is the angular point of a shape
  11. 18. blank makes up other things