Safa's Geometry crossword challenge

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Across
  1. 5. curved inwards.
  2. 8. A box-shaped solid object that has six identical square faces.
  3. 9. 2D shape with 3 sides.
  4. 10. a 3-dimensional object shaped like a ball.
Down
  1. 1. a 2D shapre with 4 sides.
  2. 2. 3D object that is made of triangle.
  3. 3. curved outwards.
  4. 4. 2D shaped object
  5. 6. two identical flat ends that are circular and one curved side.
  6. 7. It has 8 sides.