Geometry crossword puzzle

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Across
  1. 5. Bisector A line that intersects a given segment at right angles and divides it into two equal parts.
  2. 6. The distance around a figure.
  3. 12. A six-sided polygon.
  4. 13. A figure formed by two line segments or rays with a common endpoint.
  5. 16. A seven-sided polygon.
  6. 18. A three-sided polygon.
  7. 19. A series of connected line segments that starts and ends at the same place and does not intersect itself anywhere in between.
Down
  1. 1. A common endpoint of two sides of a polygon or an angle.
  2. 2. Two geometric objects having the same measure.
  3. 3. A four-sided polygon.
  4. 4. Part of a line that starts at a particular point and extends infinitely far in one direction.
  5. 7. Angle An angle that measures 90ยบ
  6. 8. A segment that connects two nonadjacent vertices of a polygon.
  7. 9. An eight-sided polygon.
  8. 10. segment A set of points on a line consisting of two endpoints and all the points between them.
  9. 11. of Symmetry:A line that divides a figure in half so that each half is the mirror image of the other.
  10. 14. A five-sided polygon.
  11. 15. A nine-sided polygon.
  12. 17. A ten-sided polygon.