Geometry Crossword Puzzle

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Across
  1. 4. Equal in size and or shape.
  2. 7. Follows the word "then".
  3. 9. Lines with identical slopes and different intercepts.
  4. 11. Prove it wrong.
  5. 12. Intersects at 90°.
  6. 15. Reasoning used when based on multiple observations or patterns.
  7. 17. Signified with a dot and a capital letter.
  8. 18. Perpendicular lines have opposite _______ slopes.
  9. 19. Two planes intersect to create these.
  10. 20. Negates the hypothesis and conclusion.
Down
  1. 1. Conclusion based on facts or definitions.
  2. 2. Theorem used to find a missing side of a right triangle.
  3. 3. Switch the hypothesis and conclusion.
  4. 5. Starts at one endpoint and extends infinitely in a direction.
  5. 6. "If and only if".
  6. 8. Follows the word "If".
  7. 10. Father of geometry.
  8. 13. Points not on the same plane.
  9. 14. Splits into two equal parts.
  10. 16. Points on the same line
  11. 21. Rise over run.