Whole Sign House Cusps
“Cusp” literally means the junction between two curves. Mostly, astrologers define it as the junction between two signs, or houses. But in a whole sign house system, I find it much more accurate to define the cusp as the “Ascending degree” translated into any given sign/house.
So if the Ascendant is 18º Sagittarius, then the “cusp” of the 7th house is 18º Gemini. The “cusp” of the 10th is 18º Virgo, etc.
This “cusp” in each whole-sign house becomes the “key point” – the “sensitive point”, the “front-door” of the house.