Geometry Crossword

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Across
  1. 4. the relation between 2 numbers
  2. 5. the halfway mark of a circle
  3. 8. the space inside of a 3D shape
  4. 9. the total surface of a 2D shape
  5. 11. the total outside length of a 2D shape
  6. 12. a form with a circular base that joins points
  7. 15. the equation used to find the opposite side or the hypotenuse of a triangle
  8. 16. lines crossing at a 90 degree angle
  9. 18. a solid figure with two bases and other joining sides
  10. 19. a full line from one end to the other on a circle
Down
  1. 1. a form with a circular base and straight parallel sides
  2. 2. the total surface of a 3D shape
  3. 3. the outside length of a circle
  4. 6. completely equal sides
  5. 7. a round, completely circular figure
  6. 10. half of a round, completely circular figure
  7. 13. lines never crossing and opposite of each other
  8. 14. the equation used to find the opposite or adjacent side of a triangle
  9. 16. a 3D shape with 4 triangular sides that make point
  10. 17. the equation used to find the adjacent side or the hypotenuse of a triangle