Вы искали: polygonal (Английский - Коса)

polygonal
ingumzobo onamacala amaninzi athe tse

open polygonal
susa a

boundary polygonal
dibanisa a

intersect this polygonal
indawo yodibano

add a closed polygonal
dibanisa a

remove a closed polygonal
susa a

select closed polygonal %1
indawo yodibano

attach to this closed polygonal
a

construct a polygonal line with this vertex
a

select a point to be a vertex of the new polygonal line...
faka a igama ye udidi.

click-drag adds a free segment, click adds a polygonal segment
command