Silent groan

“By the laws of nature there should not be any such thing as a silent groan, but a sound describable in no other terms swelled through the hall.”
p. 78, City Boy, by Herman Wouk
 
The above is the central passage of one of the funniest scenes I’ve ever encountered in literature.

Sigur Regions

suggested new term: Sigur regions
based on the following quotation:
“The edges of a triangle divide the Euclidean plane into seven regions.”
from the article titled “Where are the Conjugates?” by Steve Sigur.
 
These seven regions seem up to now to have no special designation, and so I am suggesting that we call then the Sigur regions of the plane induced by a given triangle.
Here is the link to the article: