language of geometry

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Across
  1. 1. a measuring instrument
  2. 3. exact position or location on a plane surface
  3. 4. a vector from a point to point
  4. 5. unit of measurement for angles
  5. 6. measures length in metric
  6. 8. lines that never intersect
  7. 12. a straight object
  8. 13. two or more lines intersect on a plane
  9. 14. the exact middle point
Down
  1. 1. lines intersect at a right angle
  2. 2. an angle at 180 degrees
  3. 4. angle that is 90 degrees
  4. 7. the highest point
  5. 9. figure formed by two rays meeting
  6. 10. flat two dimensional surface
  7. 11. part of a line at two distinct points