geometry terms

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Across
  1. 5. length of a circle from one side to middle
  2. 6. to divide into two congruent parts
  3. 10. a line segment connecting two nonconsecutive vertices of a polygon or polyhedron
  4. 11. full length of a circle
  5. 12. shape with 8 sides
  6. 13. shape with 3 sides
  7. 14. quadrilateral with two distinct pairs of congruent consecutive sides
  8. 17. shape with 10 sides
  9. 18. shape with 5 sides
  10. 20. shape with 9 sides
Down
  1. 1. shape with 12 sides
  2. 2. opposite side of vertex angle
  3. 3. formula to find center point of a straight line
  4. 4. shape with 7 side
  5. 7. shape with 4 sides
  6. 8. two lines that will never touch
  7. 9. shape with 6 sides
  8. 15. shape with 11 sides
  9. 16. the common endpoint of the two rays of angle
  10. 19. expression that compares two quantities using division