Geometric Crossword

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Across
  1. 2. a pair of lines that do not intersect and are not parallel to each other
  2. 7. a segment conection the midpoints of two sides of a triangle
  3. 8. a segment whose endpoints are a vertex of a triangle and the midpoint of the opposite side
  4. 10. the length along a line that is in the same place as another line
  5. 11. a location represented by a dot
  6. 13. an angle that measures 90 degrees
  7. 14. measures less than 90 degrees
  8. 16. the distance around the edge of a shape
  9. 17. a triangle having two sides of equal length
  10. 21. the point of concurrency of the altitude of a triangle
Down
  1. 1. a statement that can be proved to be true based on known and proved facts
  2. 2. a measure of the steepness of a line
  3. 3. a line that crosses at least two other lines
  4. 4. the three perpendicular bisectors of a triangle interact in one point
  5. 5. the middle point of a line segment
  6. 6. a line that divides the one into two different parts
  7. 9. when two straight lines or rays meet at a common endpoint or vertex
  8. 12. more than 90 degrees
  9. 15. a part of a line or curve between two points
  10. 18. triangle with all three sides of equal length
  11. 19. a logical argument that will explain why a statement is true
  12. 20. equal shapes and sizes can be placed over each other