Across
- 3. quadrilateral with 4 equal sides
- 9. a straight line that goes through a circle
- 10. another word for turn
- 11. angle that's exactly 90 degrees
- 13. opposite of counterclockwise
- 14. two angles that make up 90 degrees
- 16. angle lower than 90 degrees
- 17. two angles that make up 180 degrees
- 19. to move something
- 20. the equation of a straight line
Down
- 1. a combination of functions, variables and numbers
- 2. half of diameter
- 4. expressions with "="
- 5. angle above 90 degrees but lower than 180 degrees
- 6. 3D solid of a circle
- 7. the action of replacing someone or something with another person or thing.
- 8. opposite of clockwise
- 12. when you look in the mirror
- 15. to change the size
- 18. 3D solid of a triangle