Crossword Puzzle

1234567891011121314151617
Across
  1. 1. Divide a line into two equal parts.
  2. 4. Intersection of three perpendicular lines
  3. 6. The most common three-sided figure's name.
  4. 7. The intersection of three bisectors.
  5. 10. A triangle has two same lines.
  6. 11. The intersection of three perpendicular bisectors
  7. 15. A triangle has three different lines.
  8. 16. The shortest distance in the graph.
  9. 17. The most common four-sided
Down
  1. 2. Two sets of parallel quadrilateral
  2. 3. The length of a figure.
  3. 5. A rectangle with two adjacent sides equal.
  4. 8. A parallelogram with two adjacent sides equal
  5. 9. A parallelogram with two right angle.
  6. 12. The most special triangle, with 3 same lines.
  7. 13. Divide a line equally and vertically
  8. 14. The center of the graph.