Fall Geometry Vocabulary

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Across
  1. 2. Represented by 2 arrowheads
  2. 3. To cut an object in half
  3. 5. A part of a line with 1 end point and a direction
  4. 8. A part of a line with 2 endpoints
  5. 9. Points on the same plane
  6. 11. The middle point of a segment
  7. 12. Lines that do no intersect and have the same slope
  8. 15. Angles that sum to 90 degrees
  9. 16. Closed figure formed by 3 or more line segments
  10. 18. Total space in a polygon
  11. 19. Points on the same line
  12. 20. When 2 segments have the same length, they are _.
  13. 21. Lines that intersect, form 90 degree angles, and have negative reciprocal slopes
Down
  1. 1. The formula used to find the measurement between 2 points
  2. 4. Shifts every point of a figure
  3. 6. Distance outside a polygon
  4. 7. Just a location, represented by a dot
  5. 8. Angles that sum to 180 degrees
  6. 10. A flat surface that extends with no end
  7. 13. Turns a figure about a fixed point
  8. 14. Flips the figure across a line of symmetry
  9. 17. Lines that are not coplanar and do not intersect