opinion: vertex

A 7th house vertex is "The Partner," (because the 7th house is ruled by Libra).  Marriage and partnerships are very important to these people, and contentment in marriage is needed for true happiness.  Balance in relationships, both personal and professional, are needed for the individual to explore ideas and obtain valuable insights for critical decisions.  These people must have peace and balance in their lives, and they feel lost without someone else with whom to interact.

    A 7th house vertex will yield a 1st house anti-vertex, and the enterprising, originating side of the Partner will arise.  This will bring forward an Arian-like nature, wanting to start new objectives and ideas, to "get the ball rolling."  This person gains much personal satisfaction by the knowledge that they were the driving force to start a new project.  Once this person realizes the importance of initiating projects independently of others, they will gain great strength and accomplishment.

-Psychological Astrology for the Psyche (PSYAP)