Geometry Crossword

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Across
  1. 3. two dimensional surface that extends infinitely far on the x and y axis
  2. 5. two lines that intersect at a right angle
  3. 7. the middle of a line segment
  4. 10. a piece of a line having two endpoints
  5. 11. a set of lines that stretch forever and never touch
Down
  1. 1. three lines that intersect in one line
  2. 2. a set of points in the same plane
  3. 4. a line or a segment perpendicular to a segment that passes through the midpoint of the segment
  4. 6. a precise location on a line usually represented by a dot
  5. 8. points that are lying in a straight line
  6. 9. a figure formed by two rays at a common endpoint
  7. 12. a part of a line that has one endpoint and stretches infinitely in one direction
  8. 13. a long narrow mark or band