Geometry Crossword

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Across
  1. 3. The distance across an entire circle
  2. 4. A polygon with ten sides
  3. 6. The amount of space in a 2-D object
  4. 8. Flat 2-D surface that goes on infinitely
  5. 10. Whole distance around a circle
  6. 14. Lines that never intersect
Down
  1. 1. A 3-D shape with six faces
  2. 2. Line or segment that divides a angle into two equal parts
  3. 5. Part of a line that has one endpoint but also extends forever in a direction
  4. 6. Next to or sharing a side with a side, vertex, or line
  5. 7. Part of a line with two endpoints
  6. 9. A polygon with eight sides
  7. 11. The center of the circle to the outer part of it
  8. 12. Shape that is formed when a solid is cut by a plane
  9. 13. Lines that interest at a 90 degree angle