Degree, Occurrence
A yurt's stool is always placed at certain degrees. The degrees change depending on specific occurrences.
Since a yurt is round, the stool has to be angled at certain degrees. It's part of yurt culture. Imagine someone adjusting the stool with a measurement tool to adjust it to an exact degree.
ど, たく
たび
None
Also angled at exact degrees is the dog (ど).
The dog changes its degrees at every occurrence of the stool changing. Picture the dog leaning at the exact degree the stool is at.