Let the ruler do the work – see how simple it is to create angles.
There are usually several lines drawn at different angles on your ordinary rotary cutting ruler. These lines can be used to make cuts at the designated angle. Here 3 strips – 3″ wide are layered and then cut at 60° forming diamonds. Three diamonds can be sewn togther to make a Tumbling Block or piece six together for a six pointed star.
If you use the 45° line on the ruler in the same way then a subtly different shaped diamond is formed – eight of these can be put together to make an eight pointed star.