Definition:Rusty Compass
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Definition
A rusty compass is (despite what its name may make it seem) an ideal tool for drawing circles.
It differs from a normal compass in that, once it has been opened, it is too stiff and rusty to be changed.
Hence it can draw circles with only one radius.
Also known as
A rusty compass is also known as a fixed compass.
Also see
- Results about rusty compass constructions can be found here.
Sources
- 1992: David Wells: Curious and Interesting Puzzles ... (previous) ... (next): Abul Wafa ($\text {940}$ – $\text {998}$)