2

12345678910111213141516171819
Across
  1. 3. middle number of a line
  2. 6. angle that is 90
  3. 7. sum of all shapes
  4. 10. the same length
  5. 11. half of a diameter
  6. 12. angle above 90
  7. 14. passing through the line
  8. 15. the same
  9. 17. space taken in a shape
  10. 18. angle under 90
  11. 19. represents where something is
Down
  1. 1. middle of a shape
  2. 2. middle of a circle
  3. 4. median of a line
  4. 5. all four sides are congruent
  5. 7. a2+b2=c2
  6. 8. straight point goes indefinitely
  7. 9. a triangle with 2 equal sides
  8. 13. Square where the parallel lines are congruent
  9. 16. 8-sided shape