Astrology and the classical elements - Wikipedia In Western tropical astrology, there are 12 astrological signs.Each of the four elements is associated with 3 signs of the Zodiac which are always located exactly 120 degrees away from each other along the ecliptic and said to be in trine with one another. Most modern astrologers use the four classical elements extensively, (also known as triplicities), and indeed it is still viewed as a ...