Basics of Geometry

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Across
  1. 3. Lines that have one endpoint and an infinite line
  2. 5. angles less than 90 degrees
  3. 8. 90 degree angle
  4. 10. point that divides a line half
  5. 11. Points, lines, and rays that lie on the same plane
  6. 12. Angle greater than 90 degrees
  7. 13. rays that share an endpoint and go in opposite directions
  8. 18. Segments that are the same length
  9. 19. Point, line, or ray that bisects a line at its midpoint
Down
  1. 1. Points, lines, and rays that lie on the same line
  2. 2. angles that add up to 180 degrees
  3. 4. 180 degree angle
  4. 6. This has one dimension, goes on indefinitely, and is represented by its two arrow endpoints. It goes through two points
  5. 7. Lines that have two endpoints
  6. 9. angles Angles that add up to 90 degrees
  7. 14. This has two dimensions,represented usually by a shape that goes on indefinitely, and contains three point
  8. 15. Angles that have two pairs of opposite rays
  9. 16. This has no dimension, and is represented by a dot
  10. 17. Angles that share a vertex and common side, but no common points