Click on the image below to view it full size in an image viewer !
An equilateral polygon is a polygon which has all sides of the same length.

Note that Circuit is placed outside the logical context provided by the source sentence, yet included in the diagram ! It is the boundary of the «wrapper» Component, not the diagram, which defines the logical context. Dr Darren says:

Often I am asked "Why not just use a diagram to provide a logical view without stealing ownership of elements in the diagram ?". This is one reason, to be able to show elements outside the logical context. There are many others, including the ability to nest contexts, as well as the ability to trace from «wrapper» Components using ComponentRealization.


Note also the use of "callouts" of UML model metadata into notes, a very useful feature.