Geometry Crossword Puzzle

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Across
  1. 2. goes on forever in both directions
  2. 4. 8 sides and eight obtuse angles
  3. 8. triangle with sides all the same length
  4. 11. segment has a starting point and an ending point
  5. 12. triangle with no sides the same length
  6. 13. lines that cross to make a right angle
Down
  1. 1. 4 sides the same length, no right angles
  2. 3. triangle with two sides the same length and one a different length
  3. 5. 6 sides and six angles
  4. 6. has a starting point and goes forever in the other direction
  5. 7. lines that never cross and are always the same distance apart
  6. 9. 5 sided shape
  7. 10. 4 sides, opposite sides are the same length, no right angles