Across
- 3. (of a triangle) the longest of the three sides
- 6. a smooth curve joining two points
- 7. a five-sided polygon
- 13. a line exactly 90 degrees in comparison to another line
- 15. a type of triangle with three different sized angles
- 16. (of an angle) between 90 and 180 degrees
- 17. neighbouring each other
- 18. a triangle with inner angles of 60 degrees
Down
- 1. a mirror/glass that refracts light inwards
- 2. a six-sided polygon
- 4. a four-sided shape
- 5. exactly the same across one line
- 7. Two lines that will never meet
- 8. A quadrilateral with one pair of parallel lines
- 9. a mirror/glass that refracts light outwards
- 10. a line going from the right side to the left or vice versa
- 11. the same as
- 12. a line going from the top to the bottom or vice versa
- 14. This shape gets its name from the shape on its bottom side