Magic math

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Across
  1. 4. Square and triangle put together.
  2. 6. The rode is always____ .
  3. 7. The angle that one side of whiteboard.
  4. 8. The minute hand in the clock.
  5. 11. What shape of The Paris Tower's like.
  6. 12. The shape of paper.
  7. 13. The top of tower.
Down
  1. 1. Equilateral hexagonal can divide to six same triangles.
  2. 2. The bottom of ice cream.
  3. 3. A long stick that prop up the wheel.
  4. 5. How long is the tire round?
  5. 9. The tyre shaft on the wheel.
  6. 10. How big is this bed？