Geometry Project Crossword Puzzle

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Across
  1. 3. Statements that are proven
  2. 5. Lines in a plane that never intersect
  3. 8. An angle that is exactly 180°
  4. 9. Goes infinitely in one direction
Down
  1. 1. Triangle with three angles less than 90°
  2. 2. Triangle with two congruent sides
  3. 4. Triangle with three congruent sides
  4. 6. Triangle with one right angle
  5. 7. Set of all points