Puzzle

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Across
  1. 6. Angles that are across the intersection of two lines from each other
  2. 7. An angle that measures less than 90 degrees
  3. 9. Two angles that add up to 180 degrees
  4. 11. An angle that measures 180 degrees
  5. 12. A point that makes up a polygon
Down
  1. 1. Lines that, when extended out infinitely in each direction, never intersect
  2. 2. Angles that are on the inside of a polygon
  3. 3. When two shapes are the same but one is scaled
  4. 4. Two angles that add up to 90 degrees
  5. 5. An angle that measures 90 degrees
  6. 8. When two shapes exactly the same
  7. 10. An angle that measures more than 90 degrees