Across
- 8. a thing often used to erase pencil
- 9. when someone can't hear
- 11. when you have no hair, you're ...
- 12. a special kind of plastic
- 13. very hard alloy of iron and carbon
- 16. to fix something
- 17. a type of shape characteristic for triangles
- 18. rare, expensive metal, in past often used to pay with
- 19. to show appreciation
- 20. a transparent material made of melted sand
Down
- 1. something with a square shape is ...
- 2. something that isn't linear is ...
- 3. a material that comes from trees
- 4. something that doesn't use wires
- 5. an act of moving
- 6. a very common metal
- 7. a device used to store electricity
- 10. a cyrcle in 3D is a ... object
- 14. a type of metal
- 15. when someone has no hair