1Why does stepping the compass round a circle always give 60°, whatever width you set?
2Write the steps to construct an angle of 120° with a compass.
3Explain how you would construct 45°, and say how many bisections it needs.
4A student constructs 75° and the protractor reads 78°. Give two likely reasons.
5How can you copy an angle onto another ray without measuring it, and why does the method work?
6Which two angles does 135° sit between, and why is that the fastest way to think about it?
7Why should you not rub out your arcs before handing in the work?
8Can 20° be constructed with a compass and ruler? Explain.