Marlee’s Geometry Puzzle

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Across
  1. 2. an angle that measures exactly 180 degrees
  2. 4. opposite angles
  3. 5. an angle that measures exactly 90 degrees
  4. 7. lines that never intersect
  5. 10. lines that intersect to make 4 right angles
  6. 11. angles that share the same vertex point
  7. 13. angles in the same place on different lines (copy and paste)
  8. 14. angles that add up to 180 degrees
  9. 15. an angle that measures less than 180 degrees but more than 90 degrees
Down
  1. 1. a 4 sided polygon
  2. 3. A2+B2=C2
  3. 6. The side of a right triangle opposite to the right angle
  4. 8. A parallelogram with 4 sides
  5. 9. an angle that measures less than 90 degrees
  6. 12. a quadrilateral with exactly one pair of parallel lines