Describe informally an angle as the 'amount of turning' between two arms

1. Collapsing Connectors 5 - half turn
2. Collapsing Connectors 4 - one quarter of a turn
3. Collapsing Connectors 3 - half turn
4. Collapsing Connectors 2 - whole turn
5. Collapsing Connectors 1 - half turn
6. Making Connections - 2 half turns
7. Brick Sticks 4 - 3 quarter turns
8. Brick Sticks 3 - three half turns
9. All In A Spin - two full turns
10. All In A Spin - two half turns
11. Face it, Phoebe! - 180 degree turn, anticlockwise
12. Face it, Phoebe! - 90 degree turn, clockwise
13. Practise Those Turns! 2 - turns in 90 degrees
14. Practise Those Turns! 1 - degrees in one quarter turn
15. Don't Be Hasty, Wait Your Turn! 2 - turns in 360 degrees
16. Don't Be Hasty, Wait Your Turn! 1 - degrees in a half-turn
17. A Little Turn Here And A Little Turn There... - turns in 180 degrees
18. Swing Your Partner, Turn Them Round! - degrees in a quarter turn
19. One Pirouette, Please! - turns in 360 degrees
20. One Pirouette Please 1 - degrees in one whole turn