Geometry Crossword Puzzle

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Across
  1. 3. Octagon
  2. 5. Circumference
  3. 11. Congruent
  4. 12. Square
  5. 13. Acute Angle
  6. 14. Similarity
  7. 16. Scalene Triangle
  8. 17. Perimeter
  9. 18. Conjecture
  10. 19. Volume
Down
  1. 1. Distance Formula
  2. 2. Complementary Angles
  3. 4. Angle
  4. 6. Median
  5. 7. Obtuse Angle
  6. 8. Right Angle
  7. 9. Area
  8. 10. Line
  9. 15. Theorem
  10. 17. Postulate