Geometry

Crossword

Clues Across
1. The longest line across a circle
5. The portion of a circle that a semicircle is
7. Alice's mad friend
9. An angle less than 90 degrees
11. The degrees in each equilateral triangle angle
12. Begin
13. The number of sides in a hexagon
14. A type of chart or graph
15. Feminine version of 'his'
19. Residue from burnt wood
20. The longest side of a right triangle
21. This doesn't go backwards
22. A dangerous occupation
24. The number of sides in a decagon
25. The number of sides in a nonagon
26. You can do this in Worsley
28. Two lines that never intersect
Clues Down
2. A triangle with two equal sides
3. A Canadian interjection
4. The line joining the centre of a circle to its edge
5. What you will be if you don't smoke
6. A portion of a circle
8. A 180 degree angle
10. A polyhedron with four faces
15. Quicken
16. A quadrilateral with equal sides
17. A prefix meaning 'one'
18. A corner of a triangle
22. A short side of a right triangle
23. Not out
25. None; no answer
27. A backwards irrational number
1 2 3 4 5 6
7
8 9 10
11
12
13 14
15 16 17 18
19 20
21 22 23
24
25
26 27
28